I run 1.9 6-0 foots so I don't have a lot of wheel spin.

 

would a supercharger like Vortech (non-rev) have the same problem? since they specifically mentioned the "non-rev"?

 

I have a 2003 with a vortech running 7# boost and it is a huge problem for me.
I may try another kind of VB. I can solve the problem by spending $5-6K, but I would rather not do that. The tranny would shift fast enough before the vortech install to tweak the tires in 2 and 3. Now is takes foreveverrrrrrrrrrrr.

 

i was actually referring to 2006 A/T model that came with the non-rev motors..

how about using the tiptronic? is it slow with that as well?

 

The VB upgrade and raising the rev limit should fix any problems with this. I used to bounce off the rev limiter, but once it was increase to 8000, that was no longer a problem. I never ran it in auto mode after the rev increase, but I assume it was fixed, b/c I used to have the problem with manual mode and now I don't.

 

manual mode is worse than auto.

 

If it shifts fast, I should not have to raise the rev limit.
What VB did you use?

 

The gearing is too steep for the 1-2 shift while boosted - loss of traction without exceptional (ie. non-street) tires is the norm and you will bounce the rev limiter no matter how fast the trans shifts. That said, I'm trying R888s soon, so we'll see if that helps in gear 2 at least. I don't have much hope for 1st gear - pedalling is required. I never floor it in 1st gear, nor do I attempt to floor it in auto mode, so ymmv.

MRG I believe has the transgo (or he should if his trans had actually been worked on). I have the same (GTM).

If you're shifts are longer than they used to be, then something is wrong - low line pressure, slipping clutches, or poor grounding (I know some folks don't believe in this, but just connect a heavy gauge wire from your trans casing to negative battery terminal and from there to the ECU ground and see for yourself).

 

It is worse with DR's on. Do you have the buit GTR tranny with their TC? I pulol 1.9 60's with street tires, so I can't be spinning too much.

 

Fowlman01, i thought you had your issue fixed when you found out it's caused by vortech piggyback??

so, it wasn't the issue with that?

 

The piggyback was reprogrammed, but it helped very little.

 

^^Considering this, unfortunately and regretfully, i might end up selling the Z.. i'm really disappointed.

i know i won't be able to send my VB for an upgrade, or even can't guarantee shipping one from the States without getting damaged (i can't trust shipping companies anymore).

very sad...

 

I have the stage 3 GTM built 5AT. You can check out the shifts in the video I uploaded in my build thread (link in sig). Even when I lost traction, I could shift quickly enough to not hit the rev limiter (7200 rpms), even in 1st gear (though I did lead it in MM mode for the 1-2 shift, not auto - not sure if the 6500 rpm shift in auto would work, but honestly never tried).

 

Get rid of that stillen vb and get one from gtm and you will be fine.The stillen was designed for na or the lame *** stillen s/c.When i went with the greddy twins all i did was bounce off the rev limiter untill i got a FP v/b and it will shift when you tell it too.

 

Fowlman- I think a new VB and you should be set. With a little less boost than you, I have no problems hitting the rev limiter on my stock trans

 

How is it for daily driving? and does it downshift quick too??

 

subscribin

 

Dailey driving it feels like stock most of the time....but get on the throttle and it shifts hard and fast.I havent really thought about the downshifts or even played with that aspect but i will try it and see if there is a difference.Ill let you know.

 

so you can't just raise the rev limiter? u guys suggest a vb upgrade too

 

Raise the Rev Limiter so you don't run into it.
Upgrade the VB so it shifts faster and you don't run into the Rev Limiter.