approx hp with these mods???
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
cat backs do absolutly nothing nothing for horsepower, these are for sound only. The restrictive part of the exhaust is from the catalytic converters foward to the pre pup cats and the stock exhaust manifolds..do you have an auto or manual tranny?? The autos suck up more rwhp than the manual... Predator may give you 10 rwhp and the vararam another 10-15 rwhp.. Bone stock c5 ls1 with an automatic trans is around 290rwhp.. The 6 speeds have around 310rwhp
Last edited by David426; Jun 11, 2010 at 05:13 AM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Racer
Joined: Jan 2006
Posts: 399
Likes: 1
From: Jasper, GA
St. Jude Donor '10
This is my C5 dyno M6 w/ 3.42 rear end when I first got it. My mods were BPP vortex intake, BPP power duct, and stainless works chambered catbacks.
These mods are similar to yours, but I will have to say the chambered catbacks from Stainless do provide additional go juice with a CAI and it sounds awesome. Unfortunately, when I H/C'd my car it was just too loud for the wife . . . yep, they had to go. I lost 10 RWHP and had to have a retune when I went to TIs. BTW, my original RWHP was 296. Lastly, stock tune on the dyno above. Again, hope this helps.
Mike C sends
These mods are similar to yours, but I will have to say the chambered catbacks from Stainless do provide additional go juice with a CAI and it sounds awesome. Unfortunately, when I H/C'd my car it was just too loud for the wife . . . yep, they had to go. I lost 10 RWHP and had to have a retune when I went to TIs. BTW, my original RWHP was 296. Lastly, stock tune on the dyno above. Again, hope this helps.
Mike C sends
Drifting
Joined: Jun 2007
Posts: 1,437
Likes: 5
predator isn't going to add much hp, but in an auto it will turn that granny shifting tranny tune into something a bit more exciting. that's about the only good thing i got out of it.
you can also increase the shift params to your liking.
you can also increase the shift params to your liking.
Thread Starter
Cruising
Joined: Jun 2010
Posts: 14
Likes: 0
From: Paducah Kentucky
thx guys..the info is much app! cantrel thx alot more the dyno sheet...mine is an auto w stock rear end. it is also untuned...i am new to site so i really thnk u for ur time! does anyone have advice on settings for the diablo tune? especially the A/T trans shift parameters
Drifting
Joined: Jun 2007
Posts: 1,437
Likes: 5
thx guys..the info is much app! cantrel thx alot more the dyno sheet...mine is an auto w stock rear end. it is also untuned...i am new to site so i really thnk u for ur time! does anyone have advice on settings for the diablo tune? especially the A/T trans shift parameters
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