Hey guys, I'm Joel. I'm new to G35s. I just bought mine last week and I love it. It has an aftermarket exhaust and an aftermarket supercharger. There was a few problems that the dealer agreed to fix Tuesday when I go to get it detailed. One being that the windows and power locks don't work, I'm assuming it's a fuse. That's the least of my worries. The other is that when I accelerate, especially from a red light or a stop sign, the car hesitates! It will be at 1,000 RPMS at idle, then it'll go down to 800 RPMs and then shoot back up to 1000 and drive like normal. There's been 4 different times where the car has shut off on me when I accelerate from a red light. Now from my own research and from what some car aficionados have told me, it could either be a bad or dirty throttle body, or it could be a bad tuning? Maybe the computer can't pick up the superchargers power? Either way, I'd really really appreciate some help. It's driving me nuts, since I can't get it to 0-60 like it should

 

step 1... .clean the TB.... step 2.... clean the MAF.... if the problem is still there, then you can look into a tuning issue...... if its been tuned.... might just be a kit that comes with a FMU and doesnt NEED tuned... although it still should be... performance shop would be able to help you with that a lot more than a dealership... uprev might be in your future

 

Thanks for the advice, I found a reputable shop here, I'm hoping they can take a look at my car today

 

Good advice above but remember you have 2 throttle bodies. Hope you get your issue worked out, not many 2nd gens with FI on here. What supercharger are you running?

 

It's a Stillen Supercharger. I'm going to the dealership Wednesday and they claimed they'd fix all the issues. I took it to autozone and got the engine codes P0603 and P0024. There's a JET performance sticker on the engine cover, I'm hoping that all that really needs to be done is reprogramming it and some tuning. I don't know when S&R Performance will be able to check out my car either, but I'm sure hoping it's before Wednesday. Either way, I love the car, and I'll do whatever I need to get it running perfect.

 

S&R are good people. I had the Stillen kit on my G37, good kit with some help

P0603 IS
- Loose or poor battery terminal connection
- Low battery charge
- ECM power supply circuit is open or shorted
- ECM Programing
- Faulty ECM

Read more: http://infinitihelp.com/diy/obd_code...#ixzz2dB4eVJ4z

And P0224 IS Exhaust Valve Timing Control Performance Bank 2

 

JET? oh boy... they do performance "chips"... they are completely worthless.... these cars need true piggybacks/reflashes or standalones. my guess is the JET chip is messing everything up, if that is what it has