Changed Pulley Sizes - Do I need a tune? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Valkyrie14 · 03-22-2023, 09:30 PM

My current tune was for a stock ZL1 lower pulley and a 2.85 upper pulley. I ran a single belt setup with that.

I converted to a 3 belt setup with a +10% lower and a 2.55 upper.

Do I need to get re-tuned?

FasNuf · 03-22-2023, 10:55 PM

I'm pretty sure you'll want to, but it won't be drastic so you can drive it to your tuner. Just keep the boost down. If you have a wideband, all the better.

Valkyrie14 · 03-23-2023, 06:43 AM

Quote:

Originally Posted by FasNuf

I'm pretty sure you'll want to, but it won't be drastic so you can drive it to your tuner. Just keep the boost down. If you have a wideband, all the better.

Thanks. This is a new tuner for me, and it would be a dyno tune. Won’t be cheap, because he wants to start from a fresh base tune. He did my dyno run before this upgrade so at least I will be able to see what difference the pulleys made.

03-22-2023, 09:30 PM	#1
Valkyrie14 Valkyrie14 Drives: Chevrolet Camaro SS Join Date: Mar 2020 Location: Eau Claire, Wisconsin Posts: 962	Changed Pulley Sizes - Do I need a tune? My current tune was for a stock ZL1 lower pulley and a 2.85 upper pulley. I ran a single belt setup with that. I converted to a 3 belt setup with a +10% lower and a 2.55 upper. Do I need to get re-tuned? __________________ 2014 SS LS3/LSA Supercharger, 10% Super Damper, 2.55 upper, AGP Dual Pump, ID 1050 injectors, Pegasus solid rear cradle bushings, LT Headers, Roto-Fab CAI, Elite E2 catch can, E85 corn fed, 160 Thermostat, Monster Twin Disk, MGW Short Throw shifter, Tick Clutch Master Cylinder, HP Tuners, JL Audio system.

03-22-2023, 10:55 PM	#2
FasNuf Drives: 2014 Camaro ZL1 Join Date: Jul 2019 Location: Oregon Posts: 1,628 View My Garage	I'm pretty sure you'll want to, but it won't be drastic so you can drive it to your tuner. Just keep the boost down. If you have a wideband, all the better.