[backndagame]

I have a SLP longtubes with high flow cats. I just picked up O2 sims. I just need to pick up some stainless pipes to put in the cat area. And I picked up the O2 bungs also. I was just wondering if I would need to retune the car. I just had the car tuned and do not want to have to go thru that again. I figure I would pick up a little more horsepower also. Please give me your opinion.

 

[Muff Daddy]

if your car is close to stock you are not going to see much of a hp difference. would you see a benefit from a retune, yes. is it needed, no. now you need to get a intake

 

[Muff Daddy]

at this point i would say your restiction is your stock catback not the cats.

 

[backndagame]

I have a intake and the cat back is coming next week