Smallblock421
Junior Member
I am gettin ready to add some mods. And would like sum suggestions on wich CAI,Exhaust, and Programer works best. For the 4th gen 5.7
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I've never had an issue with mine. The only thing I don't like is 34 minutes to initially install the tune! LolWow, I thought that Diablosport Hemifever was the BEST for our truck's? Now what ?
Wow, I thought that Diablosport Hemifever was the BEST for our truck's? Now what ?
Go with Vararam and Moe's TB, that's what i have and love it. Will be getting longtubes probably after deployment to compliment my intake upgrades. As far as programmer, honestly I had bad luck with Diablosport. Bought it from Hemifever which their service is fine but Diablo didn't have my CAL ID and i fought with that for 4 months. Called every 2-3 weeks and would always get a different answer. Halfway through they kept saying it will be in the next update. After 2 updates and still didn't work I gave up and bought Bullydog. It's not a custom tune but I'm happy with it and at least it actually works.
Vararam and 89mm TB from Moe's, my truck loved both of these.
Darrell, are you planning to take your truck to the track, or are you just looking to have a little more fun with your everyday driver? If you plan to race the truck, then I would get a Vararam, longtube headers, and a Diablo tuner with Hemifever custom tuning. If you are just looking to have a little fun, then the S&B intake and Diablo tuner w/ Hemifever tuning is what I would go with.
The tuner is without a doubt going to be your best bang for buck upgrade, so I would start with that first.
Can you custom tune with a Bully Dog? If not then its not recommended to add the Long Tubes.
89mm on a 5.7? Seems way too large. There was a breakdown on some other forums that shows that the fastman modded stock TB flows enough for the 5.7, unless your going to stroke or supercharge it.
To the OP... The CIA is the best CIA, no other intelligence organization has come close to screwing up more operations than the CIA, not even MI6.
No custom tuning with Bully Dog, only option for that is a Diablo.
He meant 87mm, Matt doesn't have an 89mm. And as the author of that breakdown on the other forums I'll remind you that there's a difference between a true-bore and a ported throttle body. Moe's and Bully's are ported throttle bodies, not true-bore.
The fastman modded stock TB was the recommended application for the 5.7 correct?
To the OP... The CIA is the best CIA, no other intelligence organization has come close to screwing up more operations than the CIA, not even MI6.
A tuner is what ties all the other mods together. Minimal mods = minimal gains, heavy mods = heavy gains. If you put JUST the tuner on a stock truck then you'll probably get 15-25rwhp realistically on a 93 octane tune. Full bolt-ons with a custom tune and you'll be seeing 50-60rwhp over stock combined. Forced or chemical induction and you NEED a tuner to make it run properly then sky's the limit for rwhp.
For everything up to and including LT headers a ported 80mm butterfly TB is more than sufficient, whatever diameter porting is up to you and who you buy it from.
how much HP does a tuner REALLY add? I have heard almost nothing and not worth the money...plus I've heard of many trucks getting screwed up from these. True or no? Real world info would be great....like dyno before/after etc.