GTM: never too late for another SC kit
02-07-2016, 09:04 AM
#341
Jtran is quality and quick if they install..my car left GTM 3 yrs ago, SFR 1 week ago and is now at Jtran.
If I had to do it all over again, I'd do a big single not TT as I did...and I'd go to Johnny Tran and company (Jtran).
02-09-2016, 08:01 PM
#342
Registered User
Look at Jtran in Houston...they did wonders for Jaxter's ST with pump gas at 16 psi....653 rwhp with a 5AT!!!
Jtran is quality and quick if they install..my car left GTM 3 yrs ago, SFR 1 week ago and is now at Jtran.
If I had to do it all over again, I'd do a big single not TT as I did...and I'd go to Johnny Tran and company (Jtran).
Jtran is quality and quick if they install..my car left GTM 3 yrs ago, SFR 1 week ago and is now at Jtran.
If I had to do it all over again, I'd do a big single not TT as I did...and I'd go to Johnny Tran and company (Jtran).
10-07-2016, 11:01 AM
#343
Not sure if anyone is still alive but i thought i might as well update this thread for those who are. Car was running well with the stock AAM kit and the old 4.1L high CR engine, but it wasn't quite an optimal setup. These were the last numbers we got from a few months back with E85.
After some contemplation we decided to change a few things.
1. Lower compression from 11 to something in the 9s
2. Change out the cam with something with less overlap (cams were made for a high revving NA car)
3. Change fuel system to better accommodate for e85, we were too close to max. Running the CJ stage 3 with ID1300
4. Change out the turbos from EFR6758 to EFR 7163
So i got the car back with the changes above for a little over a month and breaking the engine in before it goes into a full tune. Car feels very good and driveable. Should be very fun to drive once it's fully complete.
After some contemplation we decided to change a few things.
1. Lower compression from 11 to something in the 9s
2. Change out the cam with something with less overlap (cams were made for a high revving NA car)
3. Change fuel system to better accommodate for e85, we were too close to max. Running the CJ stage 3 with ID1300
4. Change out the turbos from EFR6758 to EFR 7163
So i got the car back with the changes above for a little over a month and breaking the engine in before it goes into a full tune. Car feels very good and driveable. Should be very fun to drive once it's fully complete.
10-08-2016, 04:50 PM
#347
That boost plot looks like my GTM kit actuators plot, bad case of the wobbles. I have an external waste gate conversion kit, but don't feel like having the motor dropped just to get that installed any time soon.
Your tuned numbers after the break in should be pretty damn strong, looking forward to seeing the results.
Your tuned numbers after the break in should be pretty damn strong, looking forward to seeing the results.
10-09-2016, 01:03 AM
#348
Yeah that boost stability was the trigger to all those changes. Needed to change the IWG but had to pull the motor out due to the location so after talking to Zcar they brokered me a good deal on the engine work and the turbo upgrade with a better WG so I went for it. Let's hope it was worth it...
Last edited by gabe3d; 10-10-2016 at 11:38 AM.
