09 Sierra 6.2 1 3/4 vs 1 7/8 Headers
#1
09 Sierra 6.2 1 3/4 vs 1 7/8 Headers
Hi there I have a 09 Sierra 6.2 Denali AWD and currently have the mods listed below. Just wondering what kind of hp and tq would I gain going to 1 7/8 Headers and 3 inch collector. Thanks
Afe Stage 2 Si Intake
LS7 90mm Throttle Body
Corsa Touring Cat Back
OBX 1 3/4 LT Headers 2.5 inch Collector with Cats
Diablosport Intune Custom Tune by DiabLew
Afe Stage 2 Si Intake
LS7 90mm Throttle Body
Corsa Touring Cat Back
OBX 1 3/4 LT Headers 2.5 inch Collector with Cats
Diablosport Intune Custom Tune by DiabLew
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#8
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Although i dont frequent the site I have friends who do and over at camaro5 and there are back to back tests with 1 3/4" vs 1 7/8" headers. The differences were minimal at best
Even 2" prims havent shown huge gains unless you have big cubes? Spend money elsewhere
Even 2" prims havent shown huge gains unless you have big cubes? Spend money elsewhere
#10
On The Tree
I have the same mods and have nitrous. It's OK, but I wasn't that impressed. I did fry my converter though, so i put in a Circle D tripe disk at 2600. I'm happy with that. It seems a little loose, but when i get my cam in there it won't. My truck is a DD and I do tow 8,000 Lb on occasion. Forget the expensive 1 7/8" header and get yourself a converter and cam with a good dyno tune.