What type of boost is GIAC L308X putting out? I'm only seeing 16psi

ExpStang · 09-10-2005, 07:25 PM

This code feels alot weaker then the old version. I am seeing much lower boost numbers all the way around. 16psi max then tapers to 11psi. I will never blow my turbos like this i need old x back. Just to add i was running the old X chip with a MBC to get rid of most of the TC. I was still getting TC in the higher gears sometimes but not always. This new code i have zero TC without MBC.

Mike2kS4 · 09-10-2005, 07:30 PM

It should feel slower but not be *much* slower.

ExpStang · 09-10-2005, 08:11 PM

rktskicar · 09-10-2005, 09:13 PM

PSmalls::DoggieStyle · 09-10-2005, 09:14 PM

read 'em and weep. I'm just going by what I've read and everybody says it slower.

rktskicar · 09-10-2005, 09:39 PM

This is over 4200 to 6500 RPM range. HP is now peaked more toward higher RPM. It feels different, as you do not see the big torgue peaks in the HP curve (feels smoother).

2.7 HP ave over FATS RPM range is about 0.043 sec difference for base FATS around 5 sec for 80F.

Bruce

PSmalls::DoggieStyle · 09-10-2005, 09:43 PM

rktskicar · 09-10-2005, 09:47 PM

slower needs some instrumentation. Butt dyno is is not very reliable. Post your L308x and previous FATS, dyno, or Gtech curves for some "proof".

Bruce

DocWyte · 09-10-2005, 10:03 PM

boost spikes! Around 16psi, car feels as fast as before, it just doesn't hammer you down low like the old code did. Course, that also threw me into throttle cut and boost fluctuations, so in my case, the new code is much faster...

Milpitas2.7T · 09-10-2005, 10:03 PM

But then I don't know if this is newer then my 8x, is this the magical 91 octane stuff or different?

09-10-2005, 07:25 PM	#1
ExpStang Junior Member Account #: 60052 Join Date: Aug 2003 Posts: 838	What type of boost is GIAC L308X putting out? I'm only seeing 16psi This code feels alot weaker then the old version. I am seeing much lower boost numbers all the way around. 16psi max then tapers to 11psi. I will never blow my turbos like this i need old x back. Just to add i was running the old X chip with a MBC to get rid of most of the TC. I was still getting TC in the higher gears sometimes but not always. This new code i have zero TC without MBC. __________________

09-10-2005, 07:30 PM	#2
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,105	Haha. Isn't that the point of L308X? It should feel slower but not be much slower. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-10-2005, 08:11 PM	#3
ExpStang Junior Member Account #: 60052 Join Date: Aug 2003 Posts: 838	Its just a big difference when you were use to the higher boost torque __________________

09-10-2005, 09:13 PM	#4
rktskicar AudiWorld Super User Account #: 44443 Join Date: Oct 2002 Posts: 8,592	Post your boost curves from VAG please.. __________________ Stock 010 6MT Blue Sprint B8 S4. Premium +, Sport diff, B&O BBS CH, 255/40/18 Bridgetstone RE960 AS 01.5 6MT ASP Stage 3 S4 (sold 9/25/09)

09-10-2005, 09:14 PM	#5
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	Moss/Piggie/whoever else was mad when I said most are reporting new stuff is slower.... read 'em and weep. I'm just going by what I've read and everybody says it slower.

09-10-2005, 09:39 PM	#6
rktskicar AudiWorld Super User Account #: 44443 Join Date: Oct 2002 Posts: 8,592	From what I have seen is only slighty slower (~2.7 RHP ave @ 80F) for 2+.. This is over 4200 to 6500 RPM range. HP is now peaked more toward higher RPM. It feels different, as you do not see the big torgue peaks in the HP curve (feels smoother). 2.7 HP ave over FATS RPM range is about 0.043 sec difference for base FATS around 5 sec for 80F. Bruce __________________ Stock 010 6MT Blue Sprint B8 S4. Premium +, Sport diff, B&O BBS CH, 255/40/18 Bridgetstone RE960 AS 01.5 6MT ASP Stage 3 S4 (sold 9/25/09)

09-10-2005, 09:43 PM	#7
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	*It may only actually be slightly slower, just that many are reporting it feels* quite a bit slower.**

09-10-2005, 09:47 PM	#8
rktskicar AudiWorld Super User Account #: 44443 Join Date: Oct 2002 Posts: 8,592	It is deceptive. It is not as jerky as previous version. Feeling slower and actually being.. slower needs some instrumentation. Butt dyno is is not very reliable. Post your L308x and previous FATS, dyno, or Gtech curves for some "proof". Bruce __________________ Stock 010 6MT Blue Sprint B8 S4. Premium +, Sport diff, B&O BBS CH, 255/40/18 Bridgetstone RE960 AS 01.5 6MT ASP Stage 3 S4 (sold 9/25/09)

09-10-2005, 10:03 PM	#9
DocWyte AudiWorld Senior Member Account #: 10650 Join Date: Sep 2000 Posts: 3,759	I'm seeing the same boost. Well, except for the lack of boost spikes! Around 16psi, car feels as fast as before, it just doesn't hammer you down low like the old code did. Course, that also threw me into throttle cut and boost fluctuations, so in my case, the new code is much faster... __________________ '05 Silver A4 Avant (wife's) '02 Oxford Green BMW M3 486whp 329 ft lbs at the rear wheels

09-10-2005, 10:03 PM	#10
Milpitas2.7T Elder Member Account #: 6383 Join Date: Jun 2000 Posts: 25,962	My dyno plots proved it.. and I was one of the first to say it. But then I don't know if this is newer then my 8x, is this the magical 91 octane stuff or different? __________________

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