Quote:
Originally Posted by Dysan911
I had a very similar experience with the canned tune as well. What made it even worse was being that we have 17 cars we have to ship our ECU to them and wait for it to get back.
So the first time I sent mine in the car seemed to run ok but it would break up really bad when you put any load on it. Check engine light was on. Turns out the engine break up was a broken spark plug. The Check engine light was a setting they forgot to take care of and said it was their bad and that I needed to ship the ECU back.
When I got it back OMG. the car would barely idle. Tons of Check engine light codes were popping up. My entire garage smelled like raw fuel, etc. Then it became the blame game and I was told that it wasn't the tune, no way no how. So I started pouring over everything I could think of. They sent me out replacement Maf harness wires to try, I changed plugs again, I almost bought a brand new MAF since some of the codes mentioned a fault with the MAF. I had to get my Sales guy (House of Boost) to convince them to accept the ECU back and look over the tune again. They did so reluctantly but found one of the tuning parameters was incorrect. They apologized and corrected it and shipped the ECU back.
When I got it back no more issues with Idle, Car ran fine, no check engine lights. I wasn't a fan of the way the tune felt though. It was like driving normal stock car and then at a certain RPM if you went WOT it would suddenly surge like the feeling when you spray Nitrous. It wasn't a smooth transition of power like I was hoping. I assumed this is probably what it's like and just how it is.
I drove the car like this for a month but took it easy on it since I wasn't trusting the tune 100%. Finally decided to find a local tuner put it on his dyno just to check the A/F. He made a pull and shut it down before redline and said it was getting too lean and he did'n't want it blowing up on his dyno. I paid him to redo the tune and while it was a bit better there were still drive-ability issues that weren't right. Like on the way home on the highway it wouldn't rev past 4k RPM.. Or go to an A/F of 10.0 (Super rich). He was more of a Ford Guy and tunes a lot of Mustangs. I think he knew maybe how to tune the LS Cars and figured how hard can it be to tune our cars. There was a lot about our platform that he didn't know.
Knowing things still weren't right I went to Ted @ Jannetty Racing and OMG what a difference his tuning made. A night an day difference. I've been with him ever since with no regrets.
So you are likely right. it's 100% in your tune!. I say do yourself a favor and just find you a good local tuner or a remote tuner with a good reputation for tuning these cars and you'll really end up enjoying the investment you made.
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im good buddies with the main tuners, and there saying its not in the tune, but im gonnna have john at 21st centrury retune it