5KTQ broken when Ice racing now fixed

[Timmmy]

Hi ALL

way back when it was still snowy I managed to do something to my 5KTQ
while ice racing that caused it to not build any boost , and not rev past
about 3.5K.

After much investigation I could not find the issue, gave it to Chris at
Force5auto, and he had it for ages and couldnt find the problem either.
Between us we checked just about everything. Then Chris had a flash of
inspiration and found the problem.

Melted the new 3" highflow cat, so bad it blocked the exhaust to the point
it could not exhaust enough gas to let the engine build boost.

Have since fixed it, put and AR gauge on it and it was definately running
lean. Anyone out there have any recommendations for additional injectors I
can trigger with a couple of boost pressure switches. I would like to only
use one or 2 if possible. Has anyone ever tried using the cold start
injector to add additional fuel at high boost.

I intend to add a granger valve to the computer line to allow me to boost
past the hard fuel cut at 1.9bar, but I definately need more fuel at the
top end now.

Pictures of the melted cat core here

http://thepointoforgasm.com/gallery/Audi-5KTQS/cat_melted1



Cheers


Timmmy (Imlivinalie)
86 5KTQ - Fast...again
01 MX5 - RWD Toy
98 Triumph Daytona 955i - Cop Bate.
91 RM125 - Oh yeah!
Various others!