Pontiac GTO 2004-2006 - Hanheld Tuners

I have seen a couple handheld tuners, like diablosport and SCT, and I was wondering if they were worth the money. Has anyone used them from personal experience and see actual horsepower gains, or would I be better off just getting a wideband and a professional tune?

i prefer a tune from a professional.

yep pro tuner will do way better for almost same amount of money what you would pay for tuner. Unless you dont have anybody in 400 mile radius I would not get those :-D

Have the diablo it blows

Alright I'm gonna be stationed at fort lewis not to far from seattle i'm sure they're some good tuners up there

I picked up a used SLP diablo for about $200 just to tune out my rear o2's with catless mids. It wasn't bad. I just switched to hp tuners since I installed my cam. I real tune would be much better though

For the amount of money you're spending, it's much better to have someone who knows their way around HP tuners mess with it.

Alright that's what I figured anyway but I don't want to be paying $1000 for a tune

It'll probably be more like 400$