performance chip quest
Thread Starter
Racer
Joined: Jun 2001
Posts: 335
Likes: 0
From: MANTEO NC USA
Re: performance chip quest (vader86)
i have slp headers flowmaster no cats 52mm k&n cut air lid siamse runners ported plenum .444/.444 cam street/strip coil cap. motor bored .40 over heads ported and polished removed screens from maf
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: performance chip quest (DADDY D)
now put that stuff in your sig, and use commas, youd have to put that one on a dyno to see where your max TQ and HP numbers are, then have a chip made for it
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: performance chip quest (DADDY D)
If you are talking about the rpm's that the transmission shifts at, and it is a 93 or older, then the answer is no. A chip can only control Torque Converter lock up. The shift is controled by internal pressure and the govenor in the transmission.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: performance chip quest (DADDY D)
Indeed your shift points at WPT are controlled by weights in the tranny govenor, but I don't think this is your question.
You can use an AFPR to tune fuel flow at WOT, base timing to offset timing, and the TPS idle offset to tweak fuel and timing a little. A scan tool to look at BLMs and Integrator values will tell you if the ECM is able to adjust fuel at part throttle but it will take a dyno pull with a wide band O2 sensor to give you the real scoop at WOT.
So far, with about 300hp at the crank, I can tune my motor fine with the above methods so a chip isn't required, yet. My dyno pulls from 3,200rpm showed tha A/F ratio went to 12.6:1 at WOT and rose to 12.8:1 by 5,200rpm, which is quite acceptable. Since you also have heads & cam change it's worth a dyno pull and scan to see where you are.
BTW, have you any time slips with that setup?
You can use an AFPR to tune fuel flow at WOT, base timing to offset timing, and the TPS idle offset to tweak fuel and timing a little. A scan tool to look at BLMs and Integrator values will tell you if the ECM is able to adjust fuel at part throttle but it will take a dyno pull with a wide band O2 sensor to give you the real scoop at WOT.
So far, with about 300hp at the crank, I can tune my motor fine with the above methods so a chip isn't required, yet. My dyno pulls from 3,200rpm showed tha A/F ratio went to 12.6:1 at WOT and rose to 12.8:1 by 5,200rpm, which is quite acceptable. Since you also have heads & cam change it's worth a dyno pull and scan to see where you are.
BTW, have you any time slips with that setup?
