I own a 91 Trans Am L98 with speed density(OBD1). I had a mail ordered tune done and the tune way off. No longer TPI manifold because I swaped to a mini ram manifold, ZZ9 cam from TPIS, stock Ported 083 heads, bored 30 over with 9.5:1 compression, 1.5 roller rockers, 24lb injectors, headers, 3000 stall. I went to the track with this new tune and ran a 14.5 in the 1/4 . SO I took out the mail ordered chip and put my stock one back in and ended up running a 13.7. Can anyone here take a look at my bin of the newly burned chip and tell me if you see something wrong. I have all the equipment to burn my own chips and I will make adjustments with the advace that anyone can give me. I know I need to datalog but I do not have a laptop yet to beable to do that. Here is my BIN.fast chips.txt

 

No one can help me?

 

See if you can post it in a .bin so I can open it in TC.

 

I cant open it in a bin for some reason but I am not the greatest with computers so maybe i am doing something wrong.

 

1. Since it is a speed density tune, the VE table could be whacked. Not sure how you can accurately adjust a VE table via mail order tune.
2. Are you running the same fuel pressure that the injectors are rated 24 lb at?
3 Some values in this table seem a little weird and possibly lean.

P.E. %Change to Fuel/Air Ratio Vs. RPM

RPM % Change
0 3.1
400 3.1
800 3.1
1200 3.1
1600 3.1
2000 1.2
2400 0.0
2800 0.0
3200 0.0
3600 0.0
4000 0.0
4400 2.7
4800 -4.3
5200 -23.0
5600 -23.0
6000 -23.0
6400 -23.0

 

Those numbers are strange. In my stock bin I have those numbers are -2.3 not -23.0. I think I need to change that back to -2.3. Thanks

 

What software are you using?
TunerProRT probably?

 

Right now I am using Tunercats but I will be using TunerproRT for all my datalogging.

 

If you're using tunercat, why cant you post the tune in TC?

 

Yeah I am trying to figure that out, I just suck with computers. I will try again.

 

fast chips.zip
Here ya go.

 

Cant open it. Says file is corrupt.