1.8t vs. 3.0

[texasboy21]

So i saw a silver a4 3.0 with unpainted lowers which is identical to mine so i decided to try and race him. We went three times from three lights and i won all three!! He was FWD and auto and im quattro and 5 speed, does that sound right?? I thought they were quicker...my mods include diode/mbc set at 19psi with some lemmi tuning. Your thoughts please.

barrett

[Papachristou]

im suprised you beat him without software... i had a 3.0 race me on the interstate and i walked him three times with ease!

[Eyerate]

impossible...most likely he wasn't racing you.

[AudiA4Turbo22]

i raced an A3 3.2Q and got whooped by 4 cars lol

/threadjack

ya they're slow

[audispeed08]

I don't know how fast you two got going but I thought that stock they are about the same speed 0 to 60. If you have more boost than a stock 1.8t then i think yours should be faster.

[texasboy21]

^^^thank you. They were very short races, I dont even think I reved 1k in 3rd, really just a good launch throught 2nd gear. lol I thought I was going to catch $hit for the diode mod.

barrett

[aaaudiprotein]

OP is not stock

my mods include diode/mbc set at 19psi with some lemmi tuning

[texasboy21]

^^^well basically stock, I have a n249 delete also lol

barrett

[rxrep]

19psi is not basically stock.

[festerfm]

arent stock a4's like 7-8psi stock??

[aaaudiprotein]

19psi is not basically stock.

thank you :)

[aaaudiprotein]

arent stock a4's like 7-8psi stock??

they are

^^^well basically stock, I have a n249 delete also lol

u just said u are boosting 19psi

[festerfm]

my apr 2+ hits 23psi stage 1apr is like 18

[audispeed08]

My stage 1+ APR is going at about 22psi so 19psi is far from stock. haha yeah i think stock is 7 to 8 psi, but not sure.

[b6onboost]

In a race through only first and second gear...that's 0 to maybe 45-50mph. That's all lauch. He's auto fwd, ur quattro manual. You can easily jump on him by revving and dumping the clutch. Plus, you are more like stage 1 than stock.

Seriously though, get a decent tune. :0)

[Papachristou]

i used to peak 10/11 and hold 8/9 then i put a new DV on and i only peak 9 and hold 8

with apr 1+ i peak 22/23 and hold 19-20.....

i would also add that just upping the boost without matching fuel isnt giving him the same power of a stage 1 flashed ecu or 1+ with proper injectors

[texasboy21]

i would also add that just upping the boost without matching fuel isnt giving him the same power of a stage 1 flashed ecu or 1+ with proper injectors

This is not true it has been shown on dynos that a diode/mbc can produce nearly the same numbers, its all over the web and vwvortex. I however havnt been to a dyno so i cant say. I did add fueling and timing according to some vag com logging so thats not too much of an issue.

barrett

[Papachristou]

id like to see the dyno's to prove it, no doubt u make more power than stock but not even with stage 1.

more boost doesnt always = more power

im sure we are all paying $500 for extensively R&D'ed flashes for no reason?

[davidlizard]

I dont like that cheap way to tune our car... but you won! it's good!

[Frey7190]

Ill try and stand up for the 3.0's here... I was racing my friend (has 04 1.8t a4) and his only mod is the two magnaflow mufflers in the back... My mods, performance wise, at the time were only the magnaflows too... We raced on a straight, and I kicked his black b6s ass! The only time he got me was when i wasn't pushing the pedal down all the way (on our audis, and some vw's, you have that little extra after you push the pedal all the way down) I wasn't in SPORT mode or shifting through gears, I kept it in D. When we were both running on this flat stretch of street he was I think maybe 1-1.5 car lengths behind me.. (hard to tell when your flying hehe) The only time he had an advantage on me was when I went from a stop... His b6 being Quattro vs. my Frontrak with bald tires, I had to be nimble from a stop so the traction ctrl wouldn't engage. After that though, I just floored it and said goooooddddbbbbyyyyeeeeee as I passed him..

[aaaudiprotein]

Ill try and stand up for the 3.0's here... I was racing my friend (has 04 1.8t a4) and his only mod is the two magnaflow mufflers in the back... My mods, performance wise, at the time were only the magnaflows too... We raced on a straight, and I kicked his black b6s ass! The only time he got me was when i wasn't pushing the pedal down all the way (on our audis, and some vw's, you have that little extra after you push the pedal all the way down) I wasn't in SPORT mode or shifting through gears, I kept it in D. When we were both running on this flat stretch of street he was I think maybe 1-1.5 car lengths behind me.. (hard to tell when your flying hehe) The only time he had an advantage on me was when I went from a stop... His b6 being Quattro vs. my Frontrak with bald tires, I had to be nimble from a stop so the traction ctrl wouldn't engage. After that though, I just floored it and said goooooddddbbbbyyyyeeeeee as I passed him..

ha ha we all know that stock 3.0 is faster then stock 1.8t .
OP said he was stock, then he added he is pushing 19psi... thats what we all talking about here :)

[NyteEscape]

i have both. from a dig, my 1.8t will win probably into 3rd. on the highway, my 3.0 w/o a question.

but again, both of the cars are meant for exact opposite ways to drive.

[sean1.8t]

i would also add that just upping the boost without matching fuel isnt giving him the same power of a stage 1

but it is.

the ECU is automatically compensating for that added boost by adding fuel.

plus he has lemmitweaked it. i'd go as far to say that he is putting down the same or more power than another car running 19psi

[sean1.8t]

i have both. from a dig, my 1.8t will win probably into 3rd. on the highway, my 3.0 w/o a question.

but again, both of the cars are meant for exact opposite ways to drive.

your's is stock. OP's is not. so what's your point?

and the 2 aren't meant for opposite ways of driving. i don't even know where you got that...


GOD!! i hate these threads

[Frey7190]

ha ha we all know that stock 3.0 is faster then stock 1.8t .
OP said he was stock, then he added he is pushing 19psi... thats what we all talking about here :)

Lol... I know, but all I could see in this thread was 1.8t estrogen... So I figured id even it out with some 3.0 testosterone... hahahaha just messing..

[sean1.8t]

I dont like that cheap way to tune our car... but you won! it's good!

why not?

please give me one good reason....

[Frey7190]

your's is stock. OP's is not. so what's your point?

and the 2 aren't meant for opposite ways of driving. i don't even know where you got that...


GOD!! i hate these threads

Dont hate... if you had a question im sure you'd want ppl to answer..

[sean1.8t]

Dont hate... if you had a question im sure you'd want ppl to answer..

what hate? what question? what are you talking about?

[rxrep]

If someone can run the MBC/Diode mod with good long-term results, then more power to them for getting power on the cheap. People with closed-minded brainwashing from the chip tuners refuse to believe that a diode mod can get what they paid a good $500 for. Thing has been done on 1.8t's on vortex forever.
As for psi, there is more to it than that also. It is about volume of air.
My stage 3+ may on rare occurance peak at 22psi on the 93 file, but usually is good for 20-21. But it holds that to redline and certainly pushes more volume than a K03 pushing 23psi.
In any case, moot point. The OP is not "basically" stock, so he should be beating a 3.0. It doesn't take much to beat a non-S/C 3.slow. Sorry.
And to the poster who says a 1.8t and a 3.0 are meant for different driving... what???

[festerfm]

i kno that i'll get harassed for this, but what is this diode mod?? is there a thread on az that explains it in detail?? i'm not considering it since i'm apr 2+ but i would like to kno more about it...

[rxrep]

I'm not sure of the whole process, but basically it is installing a diode to fool the ECU in to thinking it's not boosting as much as it is so the ECU doesn't go in to limp mode due to overboost. Then, with an MBC, you control the actual boost amount, even though the ECU is fooled in to thinking it isn't what it really is.
I think that's how it works. Try Vortex; that's where I've seen it most on the B5's.

[Papachristou]

but it is.

the ECU is automatically compensating for that added boost by adding fuel.

plus he has lemmitweaked it. i'd go as far to say that he is putting down the same or more power than another car running 19psi

if he can tune it to match, more power to him but my point is again that more boost doesnt always = more power...

id also like to see long term results, i have 47k of hard run miles on my APR software without a single issue, engine/turbo are running like a champ!








i just read Lees explanation of how the diode deal works, if you are tricking the ECU into thinking there is less boost, how is it adding more fuel to compensate? that doesnt add up

[festerfm]

so you find the resistance needed to open up the wastegate on u'r factory ebc... that way you can "tell" u'r ecu that u'r never hitting u'r max boost then just run the mbc inline w/ u'r wastegate?? i kno when i did it on my subaru baja, i just took the mbc and put it before the factory boost controller.. w/ just the mbc and nothing else i was able to go from the factory 10.9psi max to 15psi max w/out injectors or any other tuning... recipe for destruction?? prob, but the tree that stopped the truck instantly broke the truck b4 the mbc did.. still, it let the turbo spool earlier rather than letting the boost build slow to improve "ride quality"... does audi have a system like that?? does the 1.8 in stock form let boost build slowly to sort of prevent the car surging???

[sean1.8t]

if he can tune it to match, more power to him but my point is again that more boost doesnt always = more power...

id also like to see long term results, i have 47k of hard run miles on my APR software without a single issue, engine/turbo are running like a champ!








i just read Lees explanation of how the diode deal works, if you are tricking the ECU into thinking there is less boost, how is it adding more fuel to compensate? that doesnt add up

dude, do you think that this is new? do you think that a B6 driver came up with this?

this has been done for 5+ years on VW's and Audi's alike. it's proven. to see long term results, search the tex. simple as that.

and as far as that last bit, the diode redirects the voltage(or "fools") towards the parameter that puts the ECU in limp mode. that's basically it. the MAP still reads how much boost the manifold is seeing. and the stock ecu can compensate fueling up to a bit past 20psi, STOCK

[Papachristou]

dude, do you think that this is new? do you think that a B6 driver came up with this?

this has been done for 5+ years on VW's and Audi's alike. it's proven. to see long term results, search the tex. simple as that.

and as far as that last bit, the diode redirects the voltage(or "fools") towards the parameter that puts the ECU in limp mode. that's basically it. the MAP still reads how much boost the manifold is seeing. and the stock ecu can compensate fueling up to a bit past 20psi, STOCK

what are you smoking? please point out where i said i came up with it?

i am familiar with the mod but the b6 is not a b5 nor a VW. VWs have been pushed much farther than the b6 as is evident by the guys on vortex...

for now, ill trust my engine to someone who knows more about programming ECUs safely than i do

[rxrep]

What we have here is a failure to communicate. I don't think you're understanding what Sean is saying. Unless you are the only B6 driver he could be talking about when saying "Do you think a B6 driver came up with this"?

But in any case, what is that much different from a transverse or even a B5 1.8t that means you can't safely do the same things to ours?
I know the little stuff, or even the big stuff like fuel return or drive by cable, but even still, a 1.8t is a 1.8t, and the mod has worked for a long time. I mean the way Sean explained it makes perfect sense. The diode is only folling the ECU to not go in to limp mode. If the fueling issues aren't an issue, what's the problem? I'm sure there have been lots of logs from people with this mod. I think it's like having a Carbonio intake. People with one won't believe that not spending any money on a stock airbox is better. People who spend hundreds of dollars on a chip can't believe the same essential thing can be done for pennies.

I personally would trust people who've done something and have not had issues over a tuner company who just wants your $$$.

Oh, and </threadjack>. Sorry. Back to the topic. 3.0's are slow.

[sean1.8t]

what are you smoking? please point out where i said i came up with it?

i am familiar with the mod but the b6 is not a b5 nor a VW. VWs have been pushed much farther than the b6 as is evident by the guys on vortex...

for now, ill trust my engine to someone who knows more about programming ECUs safely than i do

a MAP controlled ME7 1.8t is a MAP controlled ME7 1.8t. regardless of if it's Audi/VW/SEAT/etc.... it's the same

and i never said that you came up with it. read my post more carefully. i was asking you why you are asking all of these questions about it. it's been done for years and years before a few B6 guys on Audizine started trying it

[sean1.8t]

What we have here is a failure to communicate. I don't think you're understanding what Sean is saying. Unless you are the only B6 driver he could be talking about when saying "Do you think a B6 driver came up with this"?

But in any case, what is that much different from a transverse or even a B5 1.8t that means you can't safely do the same things to ours?
I know the little stuff, or even the big stuff like fuel return or drive by cable, but even still, a 1.8t is a 1.8t, and the mod has worked for a long time.

I personally would trust people who've done something and have not had issues over a tuner company who just wants your $$$.

perfectly stated

[Papachristou]

have fun with it then

b6 days are come and long gone i am afraid, no one cares about our antiquated cars, engine and ECU... VW guys are running 500+ HP while our best is what 350-400awhp?

[rxrep]

What I'd like to know, and tying in to the "Is there really a race file for the Stage 3+ APR guys" thread, is can a diode-type mod be done on the Stage 3+ ECU so I can get more boost?
I can adjust everything else with Lemmi/Unitronics, but I can't increase boost. I think that's the one major thing that makes me wish I had an SPS3 and REVO.
If I run higher octane or meth, can I use a diode and MBC/EBC to do the same thing with Stage 3+ software to bump my peak psi from 21 to say 25psi?

Again, sorry for threadjack. Right now, I'm trying to think of things to save me money from splurging on a GT2871R. If I could just bump a few more psi out of what I've got (with built internals), and run race gas, I'd be happy.