Need Advice!!

RaptorKTM · 07-04-2007, 12:56 AM

Ok now please dont flame me on this. This is regarding forced induction and this is the only forum that people respond to threads faster in. So anyways on my A3 2.0T i have an ECU on it right now. But what happens is that it will go from 0-130 extremely fast without any hesitation. But from 130 on it crawls. My question is what do you think can help the top end, intake? exhaust? downpipe?

Feedback Appreciated

SoCalRS4

wj4 · 07-04-2007, 12:58 AM

You have ECU...as in a reflash or piggback? I'd imagine that a better map up top would cure the problem, retuning it.

sambonator · 07-04-2007, 01:01 AM

Better aerodynamics would help a lot at those speeds. Lowering the car would probably do the most for you in the aero department. If you have any wings, remove them.

RaptorKTM · 07-04-2007, 01:02 AM

i have an ECU reflash by APR

RaptorKTM · 07-04-2007, 01:02 AM

Quote:

Originally Posted by sambonator

Better aerodynamics would help a lot at those speeds. Lowering the car would probably do the most for you in the aero department. If you have any wings, remove them.

.. nah its a very aero dynamic car.

IMJUSS2NASTY · 07-04-2007, 02:13 AM

Turbo's stopped spooling at a certain rpm. You have to get a tune that keeps the turbo spooling till redline. Alot of Evo's do that.

seven_227 · 07-04-2007, 03:47 AM

A free flowing direct and wider exhaust ill solve your problem if you are running stock exhaust. larger downpipes will even give it more power.

RaptorKTM · 07-04-2007, 03:49 AM

yea i think the stock exhaust is way to restrictive

seven_227 · 07-04-2007, 03:51 AM

yup most turbo cars die at the top end due to the restrictive stock exhaust.

chbrules · 07-04-2007, 03:52 AM

The A3 is so-so in aerodynamics. Pulling a .33 coefficient.

bnj · 07-04-2007, 04:28 AM

Is it quattro?
The drag increases exponentially, no wonder the acceleration slows down at high speeds. Full exhaust adds in the power dept.

RaptorKTM · 07-04-2007, 04:31 AM

Quote:

Originally Posted by chbrules

The A3 is so-so in aerodynamics. Pulling a .33 coefficient.

well i wasn't comparing to a fuckin 335

RaptorKTM · 07-04-2007, 04:31 AM

Quote:

Originally Posted by bnj

Is it quattro?
The drag increases exponentially, no wonder the acceleration slows down at high speeds. Full exhaust adds in the power dept.

no its FWD

musc · 07-04-2007, 10:50 AM

Quote:

Originally Posted by SoCalRS4

Ok now please dont flame me on this. This is regarding forced induction and this is the only forum that people respond to threads faster in. So anyways on my A3 2.0T i have an ECU on it right now. But what happens is that it will go from 0-130 extremely fast without any hesitation. But from 130 on it crawls. My question is what do you think can help the top end, intake? exhaust? downpipe?

Feedback Appreciated

SoCalRS4

Downpipe would probably help along with some less restrictive exhaust.

M&M · 07-04-2007, 11:59 AM

I have the same problem. Golf V Gti. The problem is the power dies at high revs due to the K03 not being able to hold boost. A dowpipe will help a little in that area.

But the best solution is a good induction. I fitted the ATP to mine & not only did in crease the power everywhere, but the power peak shifted about 300-400rpm later.

achien · 07-04-2007, 12:07 PM

Quote:

Originally Posted by SoCalRS4

Ok now please dont flame me on this. This is regarding forced induction and this is the only forum that people respond to threads faster in. So anyways on my A3 2.0T i have an ECU on it right now. But what happens is that it will go from 0-130 extremely fast without any hesitation. But from 130 on it crawls. My question is what do you think can help the top end, intake? exhaust? downpipe?

Feedback Appreciated

SoCalRS4

Upgrade the engine, a lot of cars starts crawling after 130 (or less) because that is the difference between having higher hp.

Just curious, what do you dyno on your A3 2.0T with the ECU?

RaptorKTM · 07-04-2007, 02:44 PM

220whp 303wtq

RaptorKTM · 07-04-2007, 02:44 PM

Quote:

Originally Posted by M&M

I have the same problem. Golf V Gti. The problem is the power dies at high revs due to the K03 not being able to hold boost. A dowpipe will help a little in that area.

But the best solution is a good induction. I fitted the ATP to mine & not only did in crease the power everywhere, but the power peak shifted about 300-400rpm later.

stupid questions but what does ATP stand for (a test pipe)?

achien · 07-04-2007, 03:09 PM

Quote:

Originally Posted by SoCalRS4

220whp 303wtq

That's it, you need to get at least 250whp+ (like the 335i) to accelerate comfortably above 130, the ability to pull out at top speed is the difference between the M3 and 335i (more hps).

The 303wtq will only help you during initial acceleration had hill-climb.

RaptorKTM · 07-04-2007, 03:10 PM

wtf..... my 330 would pull just fine up there and it had 192whp. and what you said about the m3 is bullshit. the stock vs stock m3 has 333hp and 335 has 300. So at top speed m3 will pull harder because at top end thats hp.

M&M · 07-04-2007, 03:15 PM

Quote:

Originally Posted by SoCalRS4

stupid questions but what does ATP stand for (a test pipe)?

www.atpturbo.com

I got some dyno's of before & after runs with the ATP CAI. Need to dig them up. I also have an ECU flash & DP.

RaptorKTM · 07-04-2007, 03:24 PM

hmm interesting.. thanks for the help. but im going to try turbo-back exhaust and intake and see what happens

07-04-2007, 12:56 AM	#1
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	Need Advice!! Ok now please dont flame me on this. This is regarding forced induction and this is the only forum that people respond to threads faster in. So anyways on my A3 2.0T i have an ECU on it right now. But what happens is that it will go from 0-130 extremely fast without any hesitation. But from 130 on it crawls. My question is what do you think can help the top end, intake? exhaust? downpipe? Feedback Appreciated SoCalRS4
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07-04-2007, 12:58 AM	#2
wj4 Major General 335 Rep 7,719 Posts Drives: E90 manual 335i Join Date: Nov 2006 Location: Burbank, CA iTrader: (8)	You have ECU...as in a reflash or piggback? I'd imagine that a better map up top would cure the problem, retuning it.
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07-04-2007, 01:01 AM	#3
sambonator Samtaro! 124 Rep 2,601 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	Better aerodynamics would help a lot at those speeds. Lowering the car would probably do the most for you in the aero department. If you have any wings, remove them.
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07-04-2007, 01:02 AM	#4
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	i have an ECU reflash by APR
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07-04-2007, 02:13 AM	#6
IMJUSS2NASTY Banned 22 Rep 579 Posts Drives: BMW 335I MONTEGO BLUE Join Date: Dec 2006 Location: NYC iTrader: (0)	Turbo's stopped spooling at a certain rpm. You have to get a tune that keeps the turbo spooling till redline. Alot of Evo's do that.
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07-04-2007, 03:47 AM	#7
seven_227 Lieutenant 57 Rep 590 Posts Drives: AW e92 335i Join Date: May 2007 Location: Dubai iTrader: (0)	A free flowing direct and wider exhaust ill solve your problem if you are running stock exhaust. larger downpipes will even give it more power.
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07-04-2007, 03:49 AM	#8
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	yea i think the stock exhaust is way to restrictive
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07-04-2007, 03:51 AM	#9
seven_227 Lieutenant 57 Rep 590 Posts Drives: AW e92 335i Join Date: May 2007 Location: Dubai iTrader: (0)	yup most turbo cars die at the top end due to the restrictive stock exhaust.
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07-04-2007, 03:52 AM	#10
chbrules MSVConrad++ 54 Rep 778 Posts Drives: E90 2006 325i \| E92 2007 335i Join Date: Dec 2006 Location: Peaches iTrader: (0)	The A3 is so-so in aerodynamics. Pulling a .33 coefficient. __________________ -Me
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07-04-2007, 04:28 AM	#11
bnj Banned 14 Rep 1,137 Posts Drives: e92 335i Join Date: Nov 2006 Location: Helsinki iTrader: (0)	Is it quattro? The drag increases exponentially, no wonder the acceleration slows down at high speeds. Full exhaust adds in the power dept.
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07-04-2007, 11:59 AM	#15
M&M Captain 113 Rep 750 Posts Drives: Boosted Beemers! Join Date: Mar 2007 Location: Johannesburg, South Africa iTrader: (0)	I have the same problem. Golf V Gti. The problem is the power dies at high revs due to the K03 not being able to hold boost. A dowpipe will help a little in that area. But the best solution is a good induction. I fitted the ATP to mine & not only did in crease the power everywhere, but the power peak shifted about 300-400rpm later.
	Appreciate 0 Quote

07-04-2007, 02:44 PM	#17
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	220whp 303wtq
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07-04-2007, 03:10 PM	#20
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	wtf..... my 330 would pull just fine up there and it had 192whp. and what you said about the m3 is bullshit. the stock vs stock m3 has 333hp and 335 has 300. So at top speed m3 will pull harder because at top end thats hp.
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07-04-2007, 03:24 PM	#22
RaptorKTM Colonel 236 Rep 2,366 Posts Drives: 1 M Coupe Join Date: Apr 2006 Location: San Diego iTrader: (1) Garage List 2011 BMW 1 M [0.00]	hmm interesting.. thanks for the help. but im going to try turbo-back exhaust and intake and see what happens
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