K04...GT2X...GT28r...GTRS/GT28rs - Official Turbo Comparison

[Spinnetti]

Honestly, what setup is the all our best/cheapest/easiest to install?

If I had the money I would go the APR route...since the tune is plug and play...which turbo can I go to get that "plug and play" SAFE tune!

Is there anybody here that has a BT A4 as their daily driver (I drive over 400 miles a week)

I have the eurocode/atp GT28RS that 400hp linked you to, setup with all the supporting mods including ER Comp FMIC, APR exhaust, test pipe, ceramic 6 button clutch and LWFW. I take the kids to school every day in it. Drivability is fine, but I had to learn how to drive all over as its weaker down low, and the LWFW makes stop and go traffic a chore. Make sure you have a good shop, and I'd recommend having a turbo support fabbed up = the "kit" (more an assemblage of parts) doesn't have one. It will probably cost more than you expect to have installed and done right too. Doing all the work myself except the clutch install, I have about $6000 in it (better to buy a used S4 prolly). That said, its pretty smooth and the REVO software is the best I've experienced (Started with APR Stage 1, 1+,2+.... and had problems with every single part I got from APR -exhaust is broken now)

[9744RR]

Honestly, what setup is the all our best/cheapest/easiest to install?

If I had the money I would go the APR route...since the tune is plug and play...which turbo can I go to get that "plug and play" SAFE tune!

Is there anybody here that has a BT A4 as their daily driver (I drive over 400 miles a week)

My wife's drives the family A4 with a GTRS kit daily.

[1.8quattro]

Honestly, what setup is the all our best/cheapest/easiest to install?

If I had the money I would go the APR route...since the tune is plug and play...which turbo can I go to get that "plug and play" SAFE tune!

Is there anybody here that has a BT A4 as their daily driver (I drive over 400 miles a week)

Mine is a daily driver, I do a good 300+ mi a week. The big difference really is getting used to the clutch in traffic (I have the stock flywheel though), but other than that it's perfectly drivable.

[9744RR]

Mine is a daily driver, I do a good 300+ mi a week. The big difference really is getting used to the clutch in traffic (I have the stock flywheel though), but other than that it's perfectly drivable.

300 miles/week, that's it? My wife does that just shopping everyday. I drive about 1000 miles a week.

[1.8quattro]

300 miles/week, that's it? My wife does that just shopping everyday. I drive about 1000 miles a week.

I do 50mi a day to and from work. I live near the city so I don't drive far besides that.

[absolutegtr]

/\ So the GTRS Eliminator is the 2871r right?

[jcs4]

/\ So the GTRS Eliminator is the 2871r right?

NO..its a 2860 w/ a custom turbine housing to match the stock manifold. The eliminators come in both a 2860 (GTRS) or 2871 variant.

[absolutegtr]

NO..its a 2860 w/ a custom turbine housing to match the stock manifold. The eliminators come in both a 2860 (GTRS) or 2871 variant.

Ok, but the more "common" variant used for our A4's are the 2871....right?

[A4ringedONE8T]

Ok, but the more "common" variant used for our A4's are the 2871....right?

No, a GT28RS (AKA Disco Potato AKA GT2860R) is the most commonly used. This is the basis for the GTRS as well as the turbo thats used with APR 3+

[A4ringedONE8T]

/\ So the GTRS Eliminator is the 2871r right?

As said above, a GTRS is closest to a GT28RS but physically is a bit smaller. A 71R Elim is the same as a GTRS except it has a 71mm turbine wheel in the same housing

[absolutegtr]

As said above, a GTRS is closest to a GT28RS but physically is a bit smaller. A 71R Elim is the same as a GTRS except it has a 71mm turbine wheel in the same housing

So the setup that you JUST sold...that was a a GT28RS...right?

I feel like such a newb in this thread.

I was dead set on going K04, but now I think otherwise, (good thing I opted for the stage 4 OFE clutch )

I am not looking for the BEST (most powerful turbo), i want one that spools around 4K and will hold until 6500RPM....what are my options? I want to be able to run the REVO BT file....would that be the GT28RS?

[AudiA4_20T]

So the setup that you JUST sold...that was a a GT28RS...right?

I feel like such a newb in this thread.

I was dead set on going K04, but now I think otherwise, (good thing I opted for the stage 4 OFE clutch )

I am not looking for the BEST (most powerful turbo), i want one that spools around 4K and will hold until 6500RPM....what are my options? I want to be able to run the REVO BT file....would that be the GT28RS?

have you read the sticky at the top of the b6 thread that I wrote? I feel like I really need to update it

[dougyfresh]

have you read the sticky at the top of the b6 thread that I wrote? I feel like I really need to update it

sometimes I don't think people read anything beyond the 'new' threads....

[manhertm]

have you read the sticky at the top of the b6 thread that I wrote? I feel like I really need to update it

Yeah, you need to insert the information in this thread in the sticky. He expanded at lot more in this thread.

[mioStile]

So the setup that you JUST sold...that was a a GT28RS...right?

I feel like such a newb in this thread.

I was dead set on going K04, but now I think otherwise, (good thing I opted for the stage 4 OFE clutch )

I am not looking for the BEST (most powerful turbo), i want one that spools around 4K and will hold until 6500RPM....what are my options? I want to be able to run the REVO BT file....would that be the GT28RS?

You def want the GTRS based on what stated desires. It will give you full power by 4000 and cut out around 6500. It's the safest turbo with the best ability to run aggressive/conservative based on how you tune it with the SPS3. The Revo file is MADE for it, and you can't get better software than that for that turbo. GTRS also allows you to keep your turbo/manifold in the stock location, whereas the GT28rs will necessitate a new configuration.

[absolutegtr]

You def want the GTRS based on what stated desires. It will give you full power by 4000 and cut out around 6500. It's the safest turbo with the best ability to run aggressive/conservative based on how you tune it with the SPS3. The Revo file is MADE for it, and you can't get better software than that for that turbo. GTRS also allows you to keep your turbo/manifold in the stock location, whereas the GT28rs will necessitate a new configuration.

Ok, thanks man.

Its sounds like it is the GTRS eliminator turbo for me.

And I know, flame on, I just dont understand:

I thought GTRS Eliminator was like a SERIES of turboes:

Then in that Series was the GT28RS and the GT2871R and so on...

Can some one link me to the GTRS Eliminator turbo...I dont know why I am having difficulty understanding this

[AudiA4_20T]

I'm going to have to disagree with Greg on this, although the GTRS has been proven to make the most power out of the GT28 series turbos, theoretically it should not.

A full turbo setup should allow for a quicker spool and more top end power becuase flow is restricted with the GTRS setups on the inlet and stock manifold outlet. A full turbo setup would allow for more flow which means more power and a quicker spool because the turbo is breathing easier.

So, although Greg is right, I feel like it all depends on the tune and the GTRS tune seems to be perfectly done. However, this is why the APR Stage 3+ spools quicker and has more power

[9744RR]

You want the GTRS Eliminator.

[QuattroRocket]

So with an SPS3 what are the regular file settings ? t0 & b0 and you use SPS 3 increase from there or is the file setup closer to a 5 & 5 so you can turn it down OR up depending on your application ?

[9744RR]

click here

http://www.atpturbo.com/Merchant2/me...ory_Code=VVWTK

[manhertm]

OK , can someone explain the eliminator thing to me. All this time I thought it was like a brand name for a GTRS turbo. What's what the difference? His post didnt explain this.

[martini]

OK , can someone explain the eliminator thing to me. All this time I thought it was like a brand name for a GTRS turbo. What's what the difference? His post didnt explain this.

eliminator just means the turbo eliminates the need for a new exhaust manifold...ie the turbo is more or less custom to work for our cars. The two eliminators are the GT71R and GTRS...both tuned by REVO and are the primary REVO turbo kits these days.

GT28RS is not an eliminator and would require a new exhaust manifold. This turbo is in the 'extinct' revo GT28RS kit which greg talks about, as well as the APR stage 3 kit. This would be called a 'full' kit since it needs the different hardware, etc.

[manhertm]

eliminator just means the turbo eliminates the need for a new exhaust manifold...ie the turbo is more or less custom to work for our cars. The two eliminators are the GT71R and GTRS...both tuned by REVO and are the primary REVO turbo kits these days.

GT28RS is not an eliminator and would require a new exhaust manifold. This turbo is in the 'extinct' revo GT28RS kit which greg talks about, as well as the APR stage 3 kit. This would be called a 'full' kit since it needs the different hardware, etc.

Thank you.

[martini]

FYI:

These two cars are running the same turbo, just in two different kits:

GT28RS in the APR stage 3 kit



GT28RS in the 'extinct' Revo Kit




APR kit retains the stock airbox, mounts the turbo on the bottom of the manifold (not up top like the Revo kit), uses a larger maf, etc. Same turbo but very different kits... both are "full" kits...not eliminators

[Ethar]

what kind of inter cooler are you using in your audi

[absolutegtr]

/\ SO if I went with the GTRS, would i need a new manifold? would it look like pic 2?

[doublezero30]

/\ SO if I went with the GTRS, would i need a new manifold? would it look like pic 2?

lol dude! i understand how you didnt understand at first, because i didnt either...but now its been explained. if you get the GTRS eliminator you ELIMINATE the need for a new manifold. therefore, the GTRS eliminator will bolt up to your stock mani and it will look like pic 1(more stock-like). at only $1500 for the GTRS elim hardware kit, i think down the line thats the kit i will be going with.

one question...if you dont launch too hard, but drive somewhat agressivey...how long do you think the stock clutch would hold up w/ GTRS? (days, weeks, months...)

[absolutegtr]

lol dude! i understand how you didnt understand at first, because i didnt either...but now its been explained. if you get the GTRS eliminator you ELIMINATE the need for a new manifold. therefore, the GTRS eliminator will bolt up to your stock mani and it will look like pic 1(more stock-like). at only $1500 for the GTRS elim hardware kit, i think down the line thats the kit i will be going with.

one question...if you dont launch too hard, but drive somewhat agressivey...how long do you think the stock clutch would hold up w/ GTRS? (days, weeks, months...)

LOL, dude chillax

I just saw the post above....I must have skimmed by it.

Ok, I got it now. One last question:

IF I do go the BT route (over K04) it would definetly be the GTRS turbo that i chose. BUT! Is the REVO BT file just a plain jane file and does it HAVE TO be tweake like that?

[mioStile]

LOL, dude chillax

I just saw the post above....I must have skimmed by it.

Ok, I got it now. One last question:

IF I do go the BT route (over K04) it would definetly be the GTRS turbo that i chose. BUT! Is the REVO BT file just a plain jane file and does it HAVE TO be tweake like that?

no tweaking required. :)


Also, just to make sure you understand, while the GTRS ELIMINATOR does not require a new manifold, there is the "Complete Solution" kit gathered by EuroCode that includes a wider diameter exhaust manifold for more flow and a test pipe (if you care about the environment like me, skip the test pipe. It deletes the cat and gives only about 15 hp). It is okay to run the GTRS with the stock manifold, but you will not realize the power that is capable from it. By getting the "Complete Solution," you will fit some parts that will allow you to better utilize the turbo.

Also, keep in mind, if you live in a hot climate, an intercooler becomes necessary with this turbo to keep down intake temps and keep your engine performing safely.

[dougyfresh]

one question...if you dont launch too hard, but drive somewhat agressivey...how long do you think the stock clutch would hold up w/ GTRS? (days, weeks, months...)

I would not recommend using the stock clutch with any of these 'kits'. You're more than doubling the power out of your engine. A stock OE clutch won't cut it.

Take a few people on here with just reflashes and injectors. Their stock clutches started to go (ie: audia4_18t).

Going with a full GT28RS kit or a GTRS Eliminator kit is no time to cut corners. Do it right and you won't have to worry about anything else. Cut corners and you'll constantly be f'n with your car.

That said, you should bookkeep a clutch, FMIC, exhaust and upgraded brakes when factoring in the cost of going to a Big Turbo.

[doublezero30]

I would not recommend using the stock clutch with any of these 'kits'. You're more than doubling the power out of your engine. A stock OE clutch won't cut it.

Take a few people on here with just reflashes and injectors. Their stock clutches started to go (ie: audia4_18t).

Going with a full GT28RS kit or a GTRS Eliminator kit is no time to cut corners. Do it right and you won't have to worry about anything else. Cut corners and you'll constantly be f'n with your car.

That said, you should bookkeep a clutch, FMIC, exhaust and upgraded brakes when factoring in the cost of going to a Big Turbo.

yea i know its not recommened, i was wondering if its doable for about a 3-4weeks. i have fmic and exhuast already, which i will be putting back on my new a4 when i get one. so ive book kept gtrs eliminator hardware kit, injectors, clutch, and BBK. total would be around $4-5K...and thats a lot of dough to spend at once. lol

[absolutegtr]

/\ I vote to sticky! Very informative thread.

Anyone have a link to GTRS manifold?

[Condo]

GTRS manifold:

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

[dougyfresh]

GTRS manifold:

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

and you can also use this manifold:
http://www.034motorsport.com/product...roducts_id=784




Going BT is all a lot of money but you gotta pay to play. do your research, budget and it'll all work out. I've been waiting and reading for over a year and now my car is getting a GT28RS as I type this

[absolutegtr]

/\ Thanks

So I guess the setup that i want is the one that Shawn just sold right? lol

[Condo]

/\ Thanks

So I guess the setup that i want is the one that Shawn just sold right? lol

And the same setup I'll be selling in a month or two when I go with the 3071r.

[absolutegtr]

/\ Please explain why you went with teh GT28RS setup versus the GTRS (my planned route)?

[dougyfresh]

/\ Please explain why you went with teh GT28RS setup versus the GTRS (my planned route)?

I went with the GT28RS setup for a few reasons.

1) The big reason being I don't want to mess around with cracking ATP manifolds by going with an 'Eliminator' kit. I'm sure you can eliminate the cracking but I just don't want to deal with it.

2) Therefore, I stumbled upon a deal on the APR 3+ hardware (it included their manifold) so I picked that up. Planned on using that with a GT28RS or GT2871R turbo and REVO software. As those plans were in effect I read this thread: http://www.audizine.com/forum/showthread.php?t=170401

After reading that thread I sold my APR hardware and am now working with Mark to have him put his GT28RS system on my car. My car is currently in his shop and I hope to have it back in a few short days.

So, I put the stock DV and exhaust back on to make my car 100% stock. Sold my RaceTec FMIC since I'm going with the ASP intercooler. Had ASP install an SBC clutch a few weeks ago. We dyno'd my car stock and will dyno it (on the same dyno and pretty much the same conditions) with the full GT28RS kit. Also getting new oil pan and valve cover gaskets and a new timing belt while I'm at it since the car is at 120k. Once we're all done and my car is back I'll publish the numbers.

What better way than a custom dyno tune (for 3 octanes) suited to my vehicle? We all know its in the tune. I couldn't pass up the opportunity.

[absolutegtr]

First off dougyfresh, thanks for posting your reasoning! But when you say the ATP manifold cracking, I remember reading it was because of the turbo having no support, correct? Also, is the Eurocode manifold, an ATP manifold? Main difference? Can we not just port and polish our stock manifolds?

Oh and Condo, make sure you hit me up, when it does coem time to sell it....with tax season rund the corner, I will be good to go!

[mioStile]

First off dougyfresh, thanks for posting your reasoning! But when you say the ATP manifold cracking, I remember reading it was because of the turbo having no support, correct? Also, is the Eurocode manifold, an ATP manifold? Main difference? Can we not just port and polish our stock manifolds?

Oh and Condo, make sure you hit me up, when it does coem time to sell it....with tax season rund the corner, I will be good to go!

While the ATP manifold has cracked, I'm not entirely sure why, but I have heard of people suggesting fabbing a couple custom mounts for the gtrs turbo - so your reasoning makes total sense. And yes, the EuroCode manifold is the ATP manifold. Another option, as far as I know, is the 034 exhaust manifold (posted link a bit higher on this page).