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  #16  
Old 05-05-2011, 01:18 PM
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Default Re: CEL again!

Quote:
Originally Posted by CWS View Post
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
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  #17  
Old 05-05-2011, 01:47 PM
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Default Re: CEL again!

Touche
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  #18  
Old 05-07-2011, 01:06 AM
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Default CEL again!

Back to Champion Motorsports first thing Monday.
They will get it fixed in time for Sebring departure I'm sure.
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  #19  
Old 05-08-2011, 11:36 AM
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Default Re: CEL again!

The never ending saga...
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  #20  
Old 05-16-2011, 07:23 PM
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Default Re: CEL again!

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?
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  #21  
Old 05-17-2011, 10:37 AM
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Default Re: CEL again!

Post cat 02 reading would send signal (and CEL) to adjust mixture, which would rob power I am guessing.
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  #22  
Old 05-17-2011, 11:12 AM
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Default Re: CEL again!

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.
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Pics and youtubes ==> Daily driver '10RS white/gold. White OEM RS roll bar, red schroth seat belts, CUP LSD, lip and Gurney, Sharky, V1, K40 laser blocker.

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  #23  
Old 05-23-2011, 08:25 PM
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Default Re: CEL again!

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.
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  #24  
Old 05-24-2011, 07:06 AM
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Default Re: CEL again!

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..
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Sold '07GT3 white
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