+2 I have 315's coming this week as well as an exhaust sytem in the box and an Airdoc, so I'll need to recalibrate. I'm just waiting for a special from Pcmforless.

 

I, too, will need to get a PCM tune once my taxes come in next week and I buy my exhaust, AirDoc, and 315 MTZ's. lol

 

You've apparently done more research than me. I really didn't know there were that many options available. I do have the PCMforless tune and I can tell you they are a really great company to work with. A lot of happy customers. I had the tune to compensate for the 315's, and honestly I don't think there is a lot of difference in torque are low RPM's. Translation: You won't see much difference offroading. I did pick up nearly a full MPG on the highway, so that alone keeps me happy. I think there is more response in the upper RPM band so that does make highway driving a little more pleasurable. Towing is still horrible. I don't think there is going to be any tune that's going to help with that.

That's all just based on my personal experience. As they say, "your mileage may vary."

 

The PCM tune, should compliment the AirDoc intake and Magnaflow exhaust I will be getting, to help alleviate any loss of acceleration the 35" tires will cause. I've done a bit of research and found the consensus to be, that these 3 mods should bring performance back to stock or beyond.

 

I can reprogram your H3's computer for better MPG or Power... I done my 08 Alpha and got 2 more mpg better on hwy.. getting 21 now... Also done my Saturn Sky Redline and i'm pushing over 341HP... Also done a 06 GTO 6.0

 

What about an ECM programer? Seems like it would be nice to be able to adjust your powertrain to meet your needs - on the fly. ???

 

I too had the tune on my 07 and now need one for my 08,The pcmforless was great and it made a big difference.If enough of us get together maybe we could get a deal,I did the last time

 

Who done the tune on your inline 5, and did u see better MPG? or Power ? How much were they charging u to tune the H3?

 

On the Sky Redline I was able to program it and turn it off and on, (on the Fly) Let me play around with the H3 this week and see if I can do the same thing. On the Sky i can hide the tune so when u go in to the dealership they won't find it. I'll work on the H3 this week.