2009 H3T Aplha Performance Upgrades
#1
2009 H3T Aplha Performance Upgrades
I see several older post but was wanting some recent info
I looking for a cold air intake. Online did not see the traditional type for the V8.
Also going to install a new exhaust system. I have a very good muffler shop that can do work. Will get them to check my catalytic converters. I see that there are several different mufflers. Would like a little more rumble but not real loud. Finally a tuner that will adjust for the 35s so speedometer and odometer will be correct. I just want a little more throttle response and better mpg
2009 H3T Aplha 120000 miles
I looking for a cold air intake. Online did not see the traditional type for the V8.
Also going to install a new exhaust system. I have a very good muffler shop that can do work. Will get them to check my catalytic converters. I see that there are several different mufflers. Would like a little more rumble but not real loud. Finally a tuner that will adjust for the 35s so speedometer and odometer will be correct. I just want a little more throttle response and better mpg
2009 H3T Aplha 120000 miles
#5
Definitely PCM of NC tune, that made the biggest difference for my truck. I have the GM Performance exhaust and Airdoc intake and those didn't make much of a performance increase. The tune removes a lot of the GM torque management which will make a huge difference with your throttle response. I had the 2nd gear shift tightened up too which was nice.
#6
I own a 3.7L, but wanted to offer this info. Have had K&N CAI for few years, removed resonator and had cheap AutoZone type pipe running to TB .
Decided to replace that pipe with the Airdoc recently because it's a better quality but also because it has a true 3.5" inside diameter. Took about a week or so for it to settle in with PCM, but I see a big difference from the 3" pipe .
Take same commute since I bought H3 and noticed I'm doing about 82-84mph at 2400 rpm now when I was always about 71-73mph at that same rpm. ( same stretch of highway everyday) its become a routine for me, I find that sweet spot on tach and just drive. I feel a much better response too on the entrance ramp & from a dead stop .
I put this off for a while and regret waiting this long to do it . That cheap $40-$50 stuff was restricting some volume it seems and it made a difference.
Now that's on the I5, so I imagine you would see better results. I may be wrong...not sure.
The PCM tune is plus as well, but they ask about intake before doing it . May want to research the Airdoc. Good luck
Decided to replace that pipe with the Airdoc recently because it's a better quality but also because it has a true 3.5" inside diameter. Took about a week or so for it to settle in with PCM, but I see a big difference from the 3" pipe .
Take same commute since I bought H3 and noticed I'm doing about 82-84mph at 2400 rpm now when I was always about 71-73mph at that same rpm. ( same stretch of highway everyday) its become a routine for me, I find that sweet spot on tach and just drive. I feel a much better response too on the entrance ramp & from a dead stop .
I put this off for a while and regret waiting this long to do it . That cheap $40-$50 stuff was restricting some volume it seems and it made a difference.
Now that's on the I5, so I imagine you would see better results. I may be wrong...not sure.
The PCM tune is plus as well, but they ask about intake before doing it . May want to research the Airdoc. Good luck
Last edited by JerseyCoast; 04-28-2018 at 08:01 AM. Reason: Spelling
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