Corsa & Cats installed

[King RT10]

I got my 3 inch Corsa and Roe Hiflow cats installed. The inside tempatures dropped a lot so the A/C seems stronger. Also it seems like my temperature gauge reads that the engine is running a little cooler? Is this possible? I like the sound much better.( A little like an inboard boat engine) The next stop will be the Dyno? I will bring my cry rag for the disappointing horsepower gains and post them.

 

[ElDiablo Viper]

Well I was going to put the Hi flow but decided not to have the cats. my car dyned at different dyno 430HP and 468TQ with K&N and Corsa. After I took out the cats I dynoed 424HP and 460TQ but I did not have the sims and the car run VERY REACH. After I installed the sims this did not change and the car continued to run FAT. Next I got Sean's VEC1 and the car run great with 437HP and 480TQ. After playing on the dyno I found out that I could get more power from VEC by just test driving. Now I think that my car should be over 440HP easy

 

[King RT10]

My car Dyno at 425HP without the Corsa and the Hi flow cats. So after the install if it Dyno's less my only recourse will be, 5 gallons of gas and a big match!
On the other hand I like the sound so hopefully the supercharger on order will make up the power difference and a little laughing gas (for insurance). What ever the outcome is I will post it here for comparison.
Being Bi polar I hope that the Corsa ad is close!

King

 

[Sean Roe]

Just an FYI in case you didn't know this already.
Viper's with a 3.55 rear gear show 12 to 15 less rear wheel HP on a chassis dyno than those with the stock 3.07 gear. If you do a gear and exhaust at the same time, you will not get accurate results of the exhaust change.

Sean

 

[J DAWG]

King
Did you go with the oval or round cats? I assume 3 inch.

 

[GTS Bruce]

Engine temps went down when I got rid of the cats too. Bruce

 

[King RT10]

J Smith,
I put on the 3 inch Corsa but to be honest I can not remember which Hi Flow cat I put on. I looked at a lot of them before choosing. You could call (email) Sean Roe and ask him. But what I do know is it cut the inside heat by what feels like 80%. In Florida I could go out with a beautiful girl and by the end of the date she would look like Alice Cooper (makeup running from the heat). I would have to pull over so she could tighten up every 15 minutes. I was ready to put a window unit in on the passenger side. Not any more! Plus the new sound makes it fun to drive! Dyno number soon.??