SameerP, or others running a test pipe. What sort of difference did you notice?
01-16-2003, 10:50 AM
#2
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I love it so far, though i need to do some more testing...
the big difference is spoolup. I went from spoolup at 3500 to spoolup at 3000! The sound is great on a test pipe, just deeper and throatier. In terms of flow, car feels extremely open, if that makes sense, at high revs now...5-7k is beautiful and relaxed, with massive power.
I paid labor for the thing to get put on same time as a Milltek...i know you seem to do alot of the work yourself...but its a bit of a PITA.
The test pipe is only like 150 from Brett (OneEight) so id definitely recomend it.
Cheers,
Sameer
I paid labor for the thing to get put on same time as a Milltek...i know you seem to do alot of the work yourself...but its a bit of a PITA.
The test pipe is only like 150 from Brett (OneEight) so id definitely recomend it.
Cheers,
Sameer
01-17-2003, 09:09 AM
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does the check engine light stay on?
i was looking at getting a test pipe a while ago to see what kind of increases i would see on a K03, but didn't want to have to deal with the check engine light. I read recently that you can get a chip from GIAC that is a off-road use only chip that eliminates the use for the second o2 sensor, is that what you are running? (for $150 i think it would be worth trying)
01-17-2003, 10:16 AM
#6
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I could swear i see 20psi at 3000rpm.
like i said, i need to test more...but i feel like full boost is there by about 3100 rpm, not at 3600 like before.
Put another way, i think a big part of ARR S3's low end grunt is due to their HFC...
Cheers,
Sameer
Put another way, i think a big part of ARR S3's low end grunt is due to their HFC...
Cheers,
Sameer
01-17-2003, 10:19 AM
#7
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yes CEL is on...i will get around to fixing it...
there are resistors and emulators you can buy to wire in line to fool the second O2.
I never heard about this GIAC chip, ill have to ask.
Cheers,
Sameer
I never heard about this GIAC chip, ill have to ask.
Cheers,
Sameer
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01-17-2003, 11:30 AM
#8
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Likely that is a part of it but the GT series turbos do spool faster due to the better aerodynamic
design of the housing, the turbine and, of course the BB helps some too. I wouldn't expect a HFC or test pipe to drop a full 500-600 rpm to the spool up & boost peak. I'd expect to see a couple of hundred tho ...
BTW .. Told ya you'd like a HFC or test pipe =p
BTW .. Told ya you'd like a HFC or test pipe =p
01-17-2003, 11:49 AM
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Yes it is about 100-200 with a HFC or race pipe, but it will help even more on the top end
over the stock cat which has too much back pressure at high rpms. To drop 500-600 rpms he would need a 2 liter motor to spool up the turbo that quick.
Sameer, I used to have a straight pipe with the T28 and it never hit that soon. A straight pipe will change how fast the power comes on which is called lag. The pipe cant increase flow at low rpms before the turbo.
Sameer, I used to have a straight pipe with the T28 and it never hit that soon. A straight pipe will change how fast the power comes on which is called lag. The pipe cant increase flow at low rpms before the turbo.
01-17-2003, 01:23 PM
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I hear ya, its just reinforcement of the HFC as a good part of the kit...
now just get a 3" MAF in there! 
I need to test more to determine. Clearly from 3k on the car is *alive*...the hard hit at 3500 has become a big roll on from 3k on...and the top end is fierce, but remember i also went from a Borla to a Milltek, so unfortunately i cannot appropriate between the two.
This weekend ill do some runs and see exactly what im seeing, i realize Mike's comment about spoolup...
As for the test pipe, no soot on bumper, no flames...sounds nice...i figure this fall ill do the cat project.
Cheers,
Sameer
I need to test more to determine. Clearly from 3k on the car is *alive*...the hard hit at 3500 has become a big roll on from 3k on...and the top end is fierce, but remember i also went from a Borla to a Milltek, so unfortunately i cannot appropriate between the two.
This weekend ill do some runs and see exactly what im seeing, i realize Mike's comment about spoolup...
As for the test pipe, no soot on bumper, no flames...sounds nice...i figure this fall ill do the cat project.
Cheers,
Sameer
