DIY GTM Turbo Stage 2 Install!!
09-29-2009, 09:22 PM
#85
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I think things would've been a lot easier if the engine was pulled. Props to you if you can manage to do that easily. A problem you might run into is that the A/C lines are integrated into the radiator. When you take out the radiator, you'll have to evacuate the A/C lines. This was not worth the headache and trouble for me.
I have a 6mt. There have been many TTed autos by GTM. You can search for them and see the great success they've had.
I have a 6mt. There have been many TTed autos by GTM. You can search for them and see the great success they've had.
Yeah, each time I pulled it I eliminated a lot of stuff that didn't need to be there. Don't know if I would feel comfortable enough with this one since its a relatively new model and doesn't have many write ups, but might try it. The Z had about 8-10 years of people posting data so I was never at a loss if I ran into a problem. If i did it I wouldn't worry about the AC, but I could see the concern.
BTW, did you do any suspension mods? Have to look up the auto TT's as I might slowly start upgrading suspension and things like that so I wold only have to dump a lump sum into the TT kit and EPROM flash.
Keep up the good work.
09-30-2009, 05:20 PM
#87
I usually leave the wastegates on spring pressure for about 380ish WHp. Once in a while I'll turn it up to 470 WHp, but 380 is more than enough to spin my 285 tires off the line.
09-30-2009, 11:46 PM
#88
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I have the 5AT in my car. It's been doing fine so far with trans cooler and shift kit. BUT I haven't been beating the crap out of it either.
I usually leave the wastegates on spring pressure for about 380ish WHp. Once in a while I'll turn it up to 470 WHp, but 380 is more than enough to spin my 285 tires off the line.
I usually leave the wastegates on spring pressure for about 380ish WHp. Once in a while I'll turn it up to 470 WHp, but 380 is more than enough to spin my 285 tires off the line.
Hows that tranny behave though with the turbos? Do you use the manual shifting with the paddles or stick? There is a significant lag in between shifting on the paddles and the tranny shifting. Wondering what its like win low gears with fast spool up. In sports mode my down shifting is hard and I could easily see throwing the car off balance.
Can you elaborate on the shift kit or point me to a site with it? Thanks
10-01-2009, 01:15 AM
#89
Hows that tranny behave though with the turbos? Do you use the manual shifting with the paddles or stick? There is a significant lag in between shifting on the paddles and the tranny shifting. Wondering what its like win low gears with fast spool up. In sports mode my down shifting is hard and I could easily see throwing the car off balance.
Can you elaborate on the shift kit or point me to a site with it? Thanks
Can you elaborate on the shift kit or point me to a site with it? Thanks
I usually like to upshift at around 3K RPM under normal load. To me, the DS mode is either too "aggresive" shifting at redline or too "conservative" and shifting before 2K RPM. This is why I like to drive 95% in (M) mode so I can control the up AND downshift points.
Couple of things to keep in mind when (M) shifting with turbos:
The first is I've learned to anticipate the proper time to hit the paddles for gear changes at redline. In doing so, I sometimes hit the paddle too early and transmission does not process the request because it thinks the RPM are too low when it detects the paddle switch closing. With the TT, the RPM swings up SUPER fast so the car would hit the rev limiter as a missed shift even though I hit the paddle super early. Lesson learned ... use the DS mode if you are expecting to do full throttle launches. It won't miss a shift.
The second thing to keep in mind when (M) shifting is if one gets lazy letting the transmission do automatic downshifts. You may or may not be in the right gear for accelerating if say you are approaching a red light that suddenly turns green.
In regards to (DS) mode throwing your car off balance ... I do not know for certain. I haven't done it yet, but if I were going to drive a road course, I would shift in (M) mode until I learn how the car behaves in (DS) mode.
All this information may make driving with a shift kit sound more complicated than it really is, but you get used to it.
