PCA GT2, GT3 and Cup Car SIG

PCA GT2, GT3 and Cup Car SIG (http://gt2gt3cup.org/index.php)

- GT2, GT3, RS and Cup Car Discussions (http://gt2gt3cup.org/forumdisplay.php?f=2)

- - CEL again! (http://gt2gt3cup.org/showthread.php?t=181)

Quote:

Originally Posted by CWS (Post 1373)

Marketing and engineering loves to leverage the track theme. Accounting and service hate it. Caveat emptor. Nuff said.

You meant "accounting and legal..." I think ;) All service guys love us, we bring more unnecessary work to them anyone else :D

Back to Champion Motorsports first thing Monday.
They will get it fixed in time for Sebring departure I'm sure.

The never ending saga... :(

My car is getting a new CAT this week, so all should be well.

Last weekend at Sebring my car seemed slow, I dead even with regeared 3.6's and 3.8 seemed faster on the straight. A 3.8 with headers and open exhaust pulled about 10 car lengths on me on the back straight.

Could a broken Cat slow the car down that much?

Post cat 02 reading would send signal (and CEL) to adjust mixture, which would rob power I am guessing.

They messed with the sensor parameters so the CEL would not come on. It did not all weekend. My car just felt slow.. maybe I can ask them to Dyno before and after just for kicks.

Reter,

current generation cars have multiple ECU maps that adjust based on emission readings from the multiple sensors. A broken cat (loose core) will make you lose power.

I lost massive power going from my stock exhaust (Fiat) to test pipes+custom muffler+headers. The car trapped 1/8 mile 2 mph slower (as bad as 4-5 mph on the 1/4 mile). After proper reset, which is a 2 days process in the Fiat, I got my power back, and the dyno proved gains of 20 whp (what I expected) at the top, and 30 ft-lbs on the mid-range, compared to stock. Car was too loud for my taste.

Then, I switched back to my stock cats, but this time I did not perform the proper reset. I brought the car to the dyno, and it lost 48 whp. I did a computer reboot and got back 24 whp from the loss, but I'm expecting more power. Ran Sebring without a proper reset, and the car was slow on straight line.

I just did the proper reset last week, and I got the power back, I will bring it to the dyno soon.

Find out what the reset procedure is for the Porsche, the procedure for the Fiat is tedious.

Thanks Rad,

I'll call today to try to get it dyno'ed just to see before and after new Cat. still waiting for a new cat to become available..