Bosch III'S Reprogramed/wrong tune advise
Thread Starter
Racer
Joined: Sep 2005
Posts: 449
Likes: 1
From: Victoria
Bosch III'S Reprogramed/wrong tune advise
I recently had a piggyback chip done by a local on line Tuner,
(89 VETTE,AUTO,3.07)
Told him I had ZZ4 cam,1.5 roller tips, ported plenum/intake manifold, magnaflow cat etc and already had ARAP prom.
and Bosch III's set using AFPR @ 43.5lb
On having the piggyback chip read,seems like all he has added(aside from VATS/EGR delete is
as appears he uses the ARAP anyway as a base tune
1. Lot more spark advance up top(why?)
2. Fans now set at 199 / 193F?
3. Injectors Now 21.20 vs stock 22.36
4. Idle set at 700
(89 VETTE,AUTO,3.07)
Told him I had ZZ4 cam,1.5 roller tips, ported plenum/intake manifold, magnaflow cat etc and already had ARAP prom.
and Bosch III's set using AFPR @ 43.5lb
On having the piggyback chip read,seems like all he has added(aside from VATS/EGR delete is
as appears he uses the ARAP anyway as a base tune
1. Lot more spark advance up top(why?)
2. Fans now set at 199 / 193F?
3. Injectors Now 21.20 vs stock 22.36
4. Idle set at 700
Last edited by Qiken; Sep 6, 2011 at 04:52 AM. Reason: info update
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Why are you questioning the tune? He is running it cooler, raised the idle for the cam, changed the injector constant (you didn't mention what you had for size) and added more timing from an unknow base. Does it run poorly?
Thread Starter
Racer
Joined: Sep 2005
Posts: 449
Likes: 1
From: Victoria
It just seems to perform better without the piggy back chip
Last edited by Qiken; Sep 6, 2011 at 08:57 PM.
