kpjc4eva posted this also.
GTM Performance Engineering: VQ37VHR Twin Supercharger System - Page 12 - MyG37
I advise anyone thinking about sending their car to Sam to really think about it. This appears to be the norm and not the exception.
From what I hear, the kits that tuners install are solid, so a kit from GTM might be OK, but I am worried about warranty issues.
This was truly one of the worst consumer experiences of my life. I am so disgusted I don't even want the car anymore.
I figure I was the only one who was affected with bad luck from GTM. I was stationed at Camp Pendleton with 2/4, and took my car to GTM before I got out and left for Texas. I don't know but he said something along those lines too. A month should be fine, but he ran into few problems here and there. I figure it be fine since the work was being operated in house at GTM. Should be flawless right? I got the car back with few problems. Of course I contacted Sam back and forth, and he made it sound like I ****ered up the car. I kept telling him I'll ship the car back since they touched it, and it's there specialty. But man I had problems ranging from ALL sorts of problems. It could be problems from driving on the highway and everything just shuts off. I turn on the car and it dies instantly. Codes would just appear and make the car go into limp mode, etc. Also it took almost a year getting my UpRev cable. But all in all I was being patient, and he was helping with minimum effort. This **** pissed me off to the certain point where I bought another car, and just drove that around. Almost a year and half later I've decided to take the car to a shop here in Dallas. The cars been sitting in the garage after trying so many roms from Sam. One rom would disable my cruise control, another would make the car sputter like a retard on crack, and the other would just simply do nothing.
Now this is the part where I was mind ****ed. I took it to a well respected shop here in Dallas. T1. They were laid back and cool, and I told Tony about the problem. We started talking and the tuner guy got involved. They did some stuff and basically said this kit is ****. That's mind **** number one. I said "Get the **** out, they specialize in these motors." I got the stink eye from everyone at the shop. They flat out said I needed a tune, cause the tune from the initial tune from GTM was a complete fail, and all the ones following up through email. Mind **** number 2. So T1 called UpRev in Austin, and we started talking. Omar got involved at UpRev and the owner. I forget his name. So out of anger I threw my G37 back in the garage and said, "**** it all." So several months roll by and I went down to UpRev in Austin. I talked to them about everything. Left the car at UpRev for a month. Why a month? Cause they were finding ALL SORTS OF PROBLEMS. Mind blown and lost all faith from GTM. So I spent nearly 2200 fixing all the problems, and a tune. Car ran flawlessly. The car had many leaks. Some of the stuff was poorly welded, **** was rubbing all over the place, and they were just going off with a list of problems. So before picking up the car I had a buddy from Tay's Automotive here in Dallas be my liaison to see if UpRev was just saying stuff to earn an extra buck. Nope, it turns out it was legit and they both said GTM kits are poor quality stuff. Mind ****ered times 10000 now.
I had fun with the kit at TX2K12. But the quality of the kit overall is poor. After looking at the manifolds the casting was done poorly. I have pictures of it but I kept everything to myself since its not my place to say anything, and everyone here seems to praise GTM like gods. But after meeting a handful of individuals in Southern Cali and here in Dallas, this kit is something to reckon with.
The car was fun minus all the problems, and then later realizing this is one of those shops as Sam always states, "the best bang for your buck." Simply means you get what you paid for. And apparently I paid for crap. But that's just me gentlemen, and the few, the proud, and the people who got screwed.
They probably have a different story, but I have pictures to prove my mind ****ed experience.
Sorry about your bad experience. Sucks but I hear you loud and clear.