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View Full Version : whats a better BT



tombomb84
10-03-2006, 07:47 AM
im looking into going BT pretty soon and i have been looking at kits from renn-art and atp turbo but from what ive read about the mika tuning im going to go with the kit from renn-art. Im really interested in the GTRS and the GT2871RS. I was wondering of theres a difference between the two, and which one you would recommend. Or maybe even something else. The reason i want it is for obviously for a lot more power and also something i can pick up a nice timeslip with at the track, so pretty much a race car lol.

Insanehatter
10-03-2006, 07:56 AM
its GTRS or 2871R

the GTRS is just smaller... so it will be warmer at higher boost levels compared to the 71r, it will also flow less. also the GTRS will spool a bit sooner than the 71r.

spool is a thing that only really matters in 1st gear or so... after that you just have to keep your car in the right rpm range to utilize its power.

71r elim on 23psi / borla exhaust dyno'd 294whp....

have fun....

as for which is better?? the 71r will acheive more power, but it depends on what you like

B5Beast
10-03-2006, 08:20 AM
71r if you intend on tracking or getting respectable dyno #s. 28rs if you do a lot of street driving and you want to be quick off the line. A lot of other variables as well...

onemoremile
10-03-2006, 08:31 AM
what you're referring to as spool is actually boost threshold. that is the rpm at which the engine develops enough exhaust gasses to spin the turbine and produce positive boost.

spool or lag is the time it takes to make boost when you are already above boost threshold. think of cruising at 3500 rpm and flooring it. that is lag.

the 2871r will shift the entire power curve to the right a couple hundred rpms and can potentially make about 50hp more than the gtrs.

there is a lot of information on these turbos if you look around a bit. i saw a thread with this same question in the B6 forum yesterday.

boost threshold matters in every gear unless you live your life a quarter mile at a time. if you're cruising at 2500 rpm and want to pass someone you'll need to downshift one gear to get into the power. even a k04 doesn't like to be floored much under 3000 rpm so it isn't a big deal.

mike-2ptzero
10-03-2006, 09:01 AM
Originally posted by tombomb84
im looking into going BT pretty soon and i have been looking at kits from renn-art and atp turbo but from what ive read about the mika tuning im going to go with the kit from renn-art. Im really interested in the GTRS and the GT2871RS. I was wondering of theres a difference between the two, and which one you would recommend. Or maybe even something else. The reason i want it is for obviously for a lot more power and also something i can pick up a nice timeslip with at the track, so pretty much a race car lol.


Both of those Elim kits are basicly the same, only difference is that the 71r has a slightly larger compressor wheel in the same housing. I have driven both setups at the track and they both put down the same exact times of 12.8's in 2 B6's. If you do plan on taking it to the track be ready to rev the shit out of it to get out of the hole, I tend to launch those kits at around 6k.

onemoremile
10-03-2006, 09:06 AM
that means you'll need a good clutch too. add another grand to your budget.

mike-2ptzero
10-03-2006, 09:11 AM
FMIC and a good set of tires.

TQMB5
10-03-2006, 09:52 AM
this is what is keeping me from going bt... is its not so much as by the kit, but the extra 2 grand for FMIC and clutch

onemoremile
10-03-2006, 09:54 AM
and after that you have brakes and suspension to worry about. it never really ends.

01'A41.8T
10-03-2006, 10:12 AM
Originally posted by onemoremile
it never really ends.

Seriously should consider that before starting, it could not be any more correct.

Although I sit here and just try to think of things to buy sometimes so where does that leave me. lol

94jedi
10-03-2006, 10:36 AM
Originally posted by onemoremile
and after that you have brakes and suspension to worry about. it never really ends.

exactly, I just went BT and now I really need brakes bad. I have wheels/suspension/FMIC/Clutch but now stopping is an issue.

audisnapr said it best when he thoughtfully opined that despite my car weighing a good 300 lb's less than his avant, mine felt like it weighed 500 lb's more than his car because of my weak stock brakes.

tombomb84
10-03-2006, 10:47 AM
i just got a southbend stage 3, so i need the fmic now. haha have u ever heard of the BT setup on a front trak, cuz thats what i have. im gonna pick up some slicks for when i want to use it at the track but do u think ill even get traction with this setup?

mike-2ptzero
10-03-2006, 11:09 AM
There is a guy with the BT Elim setup on a 2000 fwd, he lives in Vegas and posts on this forum.

turboquattro068
10-03-2006, 11:17 AM
i hear ya man, working on the same stuff right now, going to go with the gtrs, but worried about this tuning>>>>MIKA TUNING, i am contacting some other companies, and seeing what i can do

getting clutch installed in two weeks, southbend stg 3 custom
and yes....already looking at suspension

tombomb84
10-03-2006, 11:20 AM
haha yea i read the thread you started so im gonna stay away from the mika

Insanehatter
10-03-2006, 11:42 AM
a good company for dbc elims is unitronic, and another is Chris Tapp...

killa
10-03-2006, 11:46 AM
Just curious to who got the most hp out of a bolt on "kit" as im aiming to beat that with our new one[up]

01'A41.8T
10-03-2006, 11:57 AM
Originally posted by killa
Just curious to who got the most hp out of a bolt on "kit" as im aiming to beat that with our new one[up]

Info?

TQMB5
10-03-2006, 12:05 PM
i know arif had like 290ish AWHP on his DBC with uni tuning.. i guess you can ask him

94jedi
10-03-2006, 12:13 PM
Originally posted by killa
Just curious to who got the most hp out of a bolt on "kit" as im aiming to beat that with our new one[up]

Chris Tapp of Tapp auto got 294 whp on 94 oct out of a GTRS ATP Elim w/ a fmic, 2.5" exhaust and I think that's about it.

bOOOOstedAudi
10-03-2006, 12:14 PM
Originally posted by mike-2ptzero
There is a guy with the BT Elim setup on a 2000 fwd, he lives in Vegas and posts on this forum.
im that guy...
Mike is right, the turbos are very similar. I personally and happier with the rs. the power is always there. keep in mind the fastest b6 wagon in the world is on the gtrs setup. i have never been beaten by a 71

mike-2ptzero
10-03-2006, 12:19 PM
Originally posted by killa
Just curious to who got the most hp out of a bolt on "kit" as im aiming to beat that with our new one[up]

I think the highest whp so far for the Elim kit is around 330whp on race fuel.

94jedi
10-03-2006, 12:24 PM
Originally posted by mike-2ptzero
I think the highest whp so far for the Elim kit is around 330whp on race fuel.

wow who was that? that's pretty darn impressive.

mike-2ptzero
10-03-2006, 12:34 PM
Originally posted by 94jedi
wow who was that? that's pretty darn impressive.


That would be a B6, I think it was just under 330whp for greg(400hpA4). It is one of the b6's I have raced before, we just took it to the track 2 weeks ago and ran 12.9 with a boost leak at the turbo outlet so it was only hitting a max of 21-22psi.

tombomb84
10-03-2006, 12:53 PM
bOOOOstedAudi exactly how fast is urs and do u get bad traction problems? im just tryin to see how fast these fwd can be.

onemoremile
10-03-2006, 12:54 PM
about as fast as a BT GTI with a really fat chick riding shotgun.

toyboy8413
10-03-2006, 01:14 PM
lol

killa
10-03-2006, 01:21 PM
You guys have been very helpful. What im developing will beat that hp on pump gas. Should be a couple of weeks before i have stuff to show you guys.
again, thanks for the input.

Paul

mike-2ptzero
10-03-2006, 01:47 PM
Anything higher then that would need a built bottom end to be used on the street every day.

94jedi
10-03-2006, 01:48 PM
Originally posted by killa
You guys have been very helpful. What im developing will beat that hp on pump gas. Should be a couple of weeks before i have stuff to show you guys.
again, thanks for the input.

Paul

can't wait to see it paul!

Insanehatter
10-03-2006, 01:53 PM
I think a 300whp w/ a quick spool on pump would be great, just under the built motor range, and more daily drivable...

how do we achieve this? LOL.. you tell me paul.. you tell me

bitterchild
10-03-2006, 07:52 PM
don't gamble w/ rods unless you have a spare motor ready to go

sk8rtilldie
10-03-2006, 08:18 PM
Originally posted by bitterchild
don't gamble w/ rods unless you have a spare motor ready to go

[up] [up] words of wisdom

b00st
10-03-2006, 08:29 PM
well hopefully you get use out of that powerband and don't need to wait forever to get this achievement on pump.

dualaudi
01-09-2008, 11:48 PM
sorry to bring up such an old post. But did I hear that correctly? We can get 12.9 on quarter miles with the gtrs? If so I'm stoked. Hopefully in less than a month I'll be installing mine.
paul, did u end up getting more hp on pump?

mike-2ptzero
01-10-2008, 12:00 AM
sorry to bring up such an old post. But did I hear that correctly? We can get 12.9 on quarter miles with the gtrs? If so I'm stoked. Hopefully in less than a month I'll be installing mine.
paul, did u end up getting more hp on pump?

The quickest GTrs elim on a B5 is 12.4's on a Ctapp C16 tune. If I can run 12.6 with a B6 avant with a GTrs elim on 105 octane tune then I think it shouldn't be hard for anyone to do it in a B5 even with the same type of tune.

Kyle H
01-10-2008, 12:01 AM
Did anything ever happen with that Boost Factory kit? Their website is down so I can't check, but I haven't heard anything about it until now.

mike-2ptzero
01-10-2008, 12:16 AM
Did anything ever happen with that Boost Factory kit? Their website is down so I can't check, but I haven't heard anything about it until now.

I just saw paul(killa) reply to someone today. I can ask Issam.

dualaudi
01-10-2008, 12:21 AM
I don't think i'll ever run higher octane than 91 (socal) I know places i can get the higher octane but I care more what I can do on the streets vs. track...

Kyle H
01-10-2008, 12:25 AM
I just saw paul(killa) reply to someone today. I can ask Issam.

Cool, I'll check back here. [up]

aytheory
01-10-2008, 12:40 AM
I don't think i'll ever run higher octane than 91 (socal) I know places i can get the higher octane but I care more what I can do on the streets vs. track...


get 71r - i kinda of regret it -

317ssayzarc
01-10-2008, 05:38 AM
full 28rs [up].... fuck eliminators [down]

supernafamacho
01-10-2008, 07:36 AM
I have a 2871r eliminator on a 1995 a4 quattro,fmic,630 cc siemens,3" turbo back,3" inlet,etc....in february i go with 630 unitronic file.

I hope show to you 330 whp on 98 europe octane.

mike-2ptzero
01-10-2008, 08:08 AM
I have a 2871r eliminator on a 1995 a4 quattro,fmic,630 cc siemens,3" turbo back,3" inlet,etc....in february i go with 630 unitronic file.

I hope show to you 330 whp on 98 europe octane.

Well I hope you can reach that seeing that is equal to our 93 octane and I dont think many people are going to reach 330whp on that low of an octane.

94jedi
01-10-2008, 09:07 AM
full 28rs [up].... fuck eliminators [down]

Some guys make big power (relatively) on the elims. a few guys right here on these forums run 12.7's at aournd 107+ mph. For some that's enough, for others it's a start.

Personally, If I had to do it over, I'd build up a 2.0 and run a gt35 of some kind. That'll keep me out of trouble on the streets unless I'm really trying.

If it was on the cheap, I'd do rods on a 1.8, leave everything else alone and go 3076 like k0mpressed did.

mike-2ptzero
01-10-2008, 09:29 AM
Some guys make big power (relatively) on the elims. a few guys right here on these forums run 12.7's at aournd 107+ mph. For some that's enough, for others it's a start.

Personally, If I had to do it over, I'd build up a 2.0 and run a gt35 of some kind. That'll keep me out of trouble on the streets unless I'm really trying.

If it was on the cheap, I'd do rods on a 1.8, leave everything else alone and go 3076 like k0mpressed did.


Rods and 83mm pistons for a 1.9 liter shouldn't be much more then just throwing rods in and the nice parts is the CR could be lowered at that point if really looking to push high boost.

Kyle H
01-10-2008, 10:06 AM
Rods and 83mm pistons for a 1.9 liter shouldn't be much more then just throwing rods in and the nice parts is the CR could be lowered at that point if really looking to push high boost.

And this is exactly why it never ends. haha, it seems like there is always something that for a little more you can get much more power. Instead of going k04 you may as well go elim, if you're going to go elim, you may as well go full 28rs/2871, if you're going to go with those, you could just throw in some rods and go 3076, but if you're going to do the rods anyways........

[az]

317ssayzarc
01-10-2008, 10:15 AM
And this is exactly why it never ends. haha, it seems like there is always something that for a little more you can get much more power. Instead of going k04 you may as well go elim, if you're going to go elim, you may as well go full 28rs/2871, if you're going to go with those, you could just throw in some rods and go 3076, but if you're going to do the rods anyways........

[az]

story of my life... chip, k04, stage 3, now full 3071 and hopefully twin scoll 40 series next [headbang]

mike-2ptzero
01-10-2008, 10:19 AM
[:D]
And this is exactly why it never ends. haha, it seems like there is always something that for a little more you can get much more power. Instead of going k04 you may as well go elim, if you're going to go elim, you may as well go full 28rs/2871, if you're going to go with those, you could just throw in some rods and go 3076, but if you're going to do the rods anyways........

[az]


Which is exactly how you end up with 600+whp. [;)]

The next step for the 1.8t is a twin scroll setup. I have 3071/3071 package deals now since it seems that is the setup most people are looking to run at this point on a 1.8, 1.9 or a fully built 2 liter.

People are going to flip when I come out with a Twin scroll GT30 to GT4088 setup for the A4.[:p]


I wonder who the first person with a 3.2 liter VR6 and twin scroll GT4508R will be.[;)]

Kyle H
01-10-2008, 10:21 AM
story of my life... chip, k04, stage 3, now full 3071 and hopefully twin scoll 40 series next [headbang]
lol! do you race regularly or are you just a power junkie?

this is why I'm doing suspension and everything before any power stuff. I know what suspension I want, but I have no idea what kind of power I will want.

Kyle H
01-10-2008, 10:22 AM
People are going to flip when I come out with a Twin scroll GT30 to GT4088 setup for the A4.[:p]
That will be insane! How much power are you guys predicting with a setup like that?

317ssayzarc
01-10-2008, 10:24 AM
lol! do you race regularly or are you just a power junkie?

this is why I'm doing suspension and everything before any power stuff. I know what suspension I want, but I have no idea what kind of power I will want.

well the chip and k04 were on my golf, i realized that the k04 is basically NO upgrade so i took it off and sold it, what a waste off money [down]

the audi i bought with stage 3 and is was way to slow as well, hence the 3071


i drive 500-600 higway miles a week and have my scca and skip barber licenses so i race AND am a power junkie lol

Kyle H
01-10-2008, 10:35 AM
Nice! Hows the gas mileage with the 3071 (if it's in yet) or with the stage 3 setup? I've heard that the bigger turbo you go, the better your gas mileage is when you're not on it. Any truth to that?

94jedi
01-10-2008, 11:00 AM
I've heard that the bigger turbo you go, the better your gas mileage is when you're not on it. Any truth to that?

that's 100% true. You're in boost much less with a larger turbo. unless you're racing. [drive]

94jedi
01-10-2008, 11:01 AM
Rods and 83mm pistons for a 1.9 liter shouldn't be much more then just throwing rods in and the nice parts is the CR could be lowered at that point if really looking to push high boost.


that's true, 25+ psi safely would be nice.

Tiluleshpingen
01-10-2008, 11:17 AM
and after that you have brakes and suspension to worry about. it never really ends.

what about those that are 75% there, that the only thing thats missing is the Chip from unitronics or ctapp and a clutch ?[:D]

mike-2ptzero
01-10-2008, 12:57 PM
That will be insane! How much power are you guys predicting with a setup like that?

Well that is hard to say since there is a few different turbo setups listed. I just hope to see a better power band with the TS manifold vs the standard FR manifold.

Kyle H
01-10-2008, 02:07 PM
Oh so the twin scroll with a 40 series turbo wont have much higher power, just make it faster?

317ssayzarc
01-10-2008, 02:11 PM
Nice! Hows the gas mileage with the 3071 (if it's in yet) or with the stage 3 setup? I've heard that the bigger turbo you go, the better your gas mileage is when you're not on it. Any truth to that?

well with the stage 3 (28r), gas mileage was around 22-23, mostly highway... you have to understand, a real 28r (not elim) spools REALLY fast...

the 3071 isnt in yet, febuary vacation [;)]

mike-2ptzero
01-10-2008, 02:12 PM
Oh so the twin scroll with a 40 series turbo wont have much higher power, just make it faster?

The 40 TS on my car should make way more peak hp. Even at T3/67 should put me over 700whp.

But I want to do the TS manifold setup so that people have another choice and be able to run the 30's and 35's to get a larger tq band.

They have the TS setups for the EVO already which I can also sell and have been ask by a few Evo owners to start selling on their forums.

killa
01-10-2008, 02:19 PM
Did anything ever happen with that Boost Factory kit? Their website is down so I can't check, but I haven't heard anything about it until now.

Don't recall the site being down, www.boostfactory.net not .com

killa
01-10-2008, 02:23 PM
I think a 300whp w/ a quick spool on pump would be great, just under the built motor range, and more daily drivable...

how do we achieve this? LOL.. you tell me paul.. you tell me


You can get that with a 28RS, yeah, I hardly check these pages anymore....[:(]

Kyle H
01-10-2008, 04:21 PM
Killa since you're in here, did anything ever happen with the Boost Factory 330+awhp turbo kit or did you guys scrap the idea? I don't see anything on your site about it.

killa
01-11-2008, 05:17 PM
Killa since you're in here, did anything ever happen with the Boost Factory 330+awhp turbo kit or did you guys scrap the idea? I don't see anything on your site about it.

The car has 9k miles on it now, i set up vteccured with the 1.8 version of the kit which uses a GT3071R and he just got it running today, let's just say that he's very pleased with it.

The 20/20 ran 13.4@10psi back in the summer with a BFSMIC, now the spare time is being devoted to the mk4 12v kit[rolleyes]
But it has to be done right so it'll take it time.

317ssayzarc
01-11-2008, 05:32 PM
man paul, making an audizine comeback? no killa and then BAM, killa overload lol