After GIAC Flash I'm still getting stock boost. Still feels stock. Help.
#1
After GIAC Flash I'm still getting stock boost. Still feels stock. Help.
I have a '04 CTT and recently had the GIAC flash done. I also have the flashloader to allow me to switch between "pump" mode (which is the tuned program for 93 octane) and "stock" mode. Everything else on the vehicle is stock. From reading everyone's testimonials about the GIAC flash, it should have been a pretty noticeable difference. However, from my observation, my "pump" mode feels the same as "stock". The boost gauge both in "pump" and in "stock" top out at .7 bar and level out to about .6 bar.
I also did a couple drag pulls against a friend of mine who has the same exact car, but completely stock. Every pull was dead even (PSM off, sport mode, low suspension). I also repeated this with putting my car back into "stock" mode, and again we were always dead even.
It's obvious that the "pump" flash had no effect and is identical to stock.
I contacted GIAC and they said the boost guage should definitely be pinned all the way to the right, at .8 bar or past it since their tune puts it at just over 1 bar and I should feel a very noticeable difference over stock. At their request, I took it back to the approved installer to have it reflashed, but the end result is the same even after another flash.
Has anyone with a GIAC tune ever experienced this before?
Thanks in advance for any help!
I also did a couple drag pulls against a friend of mine who has the same exact car, but completely stock. Every pull was dead even (PSM off, sport mode, low suspension). I also repeated this with putting my car back into "stock" mode, and again we were always dead even.
It's obvious that the "pump" flash had no effect and is identical to stock.
I contacted GIAC and they said the boost guage should definitely be pinned all the way to the right, at .8 bar or past it since their tune puts it at just over 1 bar and I should feel a very noticeable difference over stock. At their request, I took it back to the approved installer to have it reflashed, but the end result is the same even after another flash.
Has anyone with a GIAC tune ever experienced this before?
Thanks in advance for any help!
#4
x2....it's possible they're torn and leaking. If they're faulty..get a good set of Forge valves and you'll be all set
Forge Diverter Valves
(they're the same for a 996TT, Cayenne TT, or 997.2 TT)
Forge Diverter Valves
(they're the same for a 996TT, Cayenne TT, or 997.2 TT)
#6
Not necessarily as the additional boost might be higher than the worn out DVs can hold. Maybe they can only hold .7 and releasing anything above it. But I would still be talking to GIAC. Upgraded DVs are a good idea regardless
Last edited by xsrfs; 08-05-2011 at 12:52 PM.
#7
From what I read, if you chose a tune and do not upgrade your diverter valves than you asking for trouble (read: torn stock diverter valves).
Considering the price of a good tune vs diverter valves (~$300), just factor it in as part of the upgrade price.
Considering the price of a good tune vs diverter valves (~$300), just factor it in as part of the upgrade price.
Trending Topics
#8
agreed. I know more about flashing audis than porsches and this is standard for audis.
#9
We changed to Evo diverter valves. I agree that the valves helped a little. Feels like boost holds a little longer at .7 bar and seems to build quicker. However, the problem remains. The "pump" mode and "stock" mode remain identical.
#10
The tunes are pretty straight forward and should work immediately- provided that you don't have a vacuum leak. If you already upgraded the DVs and are holding boost, then you should take a step back and look for something simple.
I would suggest calling GIAC and see if there could have been a mix-up there with your tune. I would also make sure that you understand how your aftermarket GIAC setup is supposed to work.
#11
The GIAC is a good tune- you should feel a night and day difference. I know I do whenever I switch between my stock tune and aftermarket tune.
The tunes are pretty straight forward and should work immediately- provided that you don't have a vacuum leak. If you already upgraded the DVs and are holding boost, then you should take a step back and look for something simple.
I would suggest calling GIAC and see if there could have been a mix-up there with your tune. I would also make sure that you understand how your aftermarket GIAC setup is supposed to work.
The tunes are pretty straight forward and should work immediately- provided that you don't have a vacuum leak. If you already upgraded the DVs and are holding boost, then you should take a step back and look for something simple.
I would suggest calling GIAC and see if there could have been a mix-up there with your tune. I would also make sure that you understand how your aftermarket GIAC setup is supposed to work.
949-724-0014
Thread
Thread Starter
Forum
Replies
Last Post
eclip5e
Automobiles For Sale
8
04-28-2022 12:38 AM
vividracing
Mercedes / AMG
1
09-01-2015 03:16 PM
vividracing
Boxster / Cayman
0
08-20-2015 12:17 PM