stumprrp

iTrader: (2)

So I hit the track Saturday after adding drag radials and a torque arm relocation bracket, needless to say it was a disaster because the car would not shift into second gear due to the dreaded limp mode. However I set two prs, a 60' of 1.60 hanging the drivers tire and raceweight of 3810 which is ridiculous, lol. I was pretty happy with the launch at that weight with heavy *** 17x9 zr1 with 275 bfgs, I think it took the tire off the ground every time but the damn thing wouldn't shift!

joelster

How do you get an f-body to weigh 3810lbs? Are you well over 200lbs? 12 point cage? My convertible with boxed subframe connectors weighed 3510 with a half tank of gas.

gregrob

iTrader: (8)

My LS car weighs 3815 stock, with driver and nitrous bottle.

Why don't you have the tune fixed?

stumprrp

iTrader: (2)

I really don't know...its a fully loaded hardtop with deep dish zr1s..big lower control arms tq arm relo and 3"duals...and yeah i'm 235 lol. The tune well the cars never done this and my pcm is locked so I got to find a solution.

96capricemgr

iTrader: (1)

Your pcm is locked and the tuner did not do the shift fix?????

I though Ed was the only one locking them and I would be surprised if he would forget the shift fix. I sincerely hope the stall wall is the issue but at the same time prepare yourself for some possibility is is mechanical.

stumprrp

iTrader: (2)

I believe Brian herter tuned this car...I did numerous street launches and it crushes the 1-2 shift every time. Going to call him tomorrow.

stumprrp

iTrader: (2)

I think its stall wall after doing some research...this car also only had a 3000 when I bought it...here's the video

http://www.youtube.com/watch?v=JSziqubiNOg

AS You can see it goes right to limiter and into third. PS you can see the wheelie if you pause it lol.

96capricemgr

iTrader: (1)

If this is a Herter tuned car stall wall would not surprise me atall.
Back when my car was a mild cam only setup I had some tunes from him that were so bad the car was not drivable.

WS Sick

Yes it sounds like the stall wall, But one question, are the tires youre using the same size (height) as what the program is made for? The reason I ask is if you are shifting manually you are going off of a different set of tables and thus different criteria for the shift to happen.
My car a loaded out 97 WS^ with me in it (225) is in the 3750 range, depending on what I ate for supper...lol

gregrob

iTrader: (8)

PCMFORLESS is ******* junk.

I can fix your tune for free if you can read / write the PCM

poloaa009

I think its stall wall after doing some research.

96capricemgr

iTrader: (1)

He puts some effort into 2-3 cars a year which maintains his reputation, most though he really seems to halfass.

ABA383

iTrader: (1)

Yep its the stall wall issue. The 4000 rpm stall seems to be the magic number. My car was fine with a Vig 3600. As soon as we re-stalled it to 4000 that issue arose. I've seen it pretty consistently at the 4000 mark over the years of working on these cars. Easy computer tune/fix.

--Alan

stumprrp

iTrader: (2)

Appreciate the replys, however this isnt a mail order tune its a dyno tune. I talked to them yesterday and they said they do not lock PCMs, so im lead to believe there is a wiring or electrical issue with the car which is why i cant get into the tune, or at least the trans builder couldnt. The tune besides the trans is great, perfect WOT afr, no buck at 1200 rpm, but its slightly aggressive and could use a little less timing.

Mystery Bird

iTrader: (7)

I have to agree that you just have tuning issues. If it's not stall wall then your shift points need to be adjusted. Changing tire size will throw them off. The PCM commands the shift but many other variables dictate as to how long it actually takes to make the shift.