Need a LT1 Tuner!!
Need a LT1 Tuner!! i have a lt1 car that was originally tuned by Jeremy Formato.(the car runs great intill wot) but out of no where, it seemed like the tune or shift points have been out of wack. it only happens at WOT, and it seems like the car is trying to shift over the redline. and it happens in every gear, and in every mph. i dont know if you can help me out with this or not? i can get video of the car doing it, also. i hopefully have someone that can help, just waiting on his response. The mods are
Engine:
GMPP 218/228 .525"/.525" Cam
GMPP 1.6 Roller Rockers
GMPP LT4 Valve Springs
GMPP Lifter Set (Replaced at 78,7XX miles)
Hypertech 160* Thermostat
Exhaust:
Pacesetter Ceramic Coated Longtube Headers
3" Off Road Y-Pipe & Custom 3" Catback
3" QTP Cutout
Flowmaster 40 Series Muffler with Dumps
Drivetrain:
Pro-built Automatics Rebuilt 4L60E with cryoed reverse/input drum and HD sleeve
Transgo Vacuum Modulator & Transgo Stage II Shift Kit
PI Vigilante 3000 Stall
LS1 Aluminum Driveshaft with Lakewood Performance U-Joints
B & M Tranny Cooler
T/A Performance Rear End Girdle
Suspension:
Spohn Tubular Lower Control Arms
Spohn Lower Control Arm Relocation Brackets
Spohn Strut Tower Brace
Spohn Subframe Connectors
Ignition:
NGK TR5 Spark Plugs
MSD 8.5" Super Conductor Plug Wires
MSD Ignition Coil
LT4 Knock Module
Jeremy Formato Dynotune
and the car is a 94 if it helps.
thanks Trevor
Engine:
GMPP 218/228 .525"/.525" Cam
GMPP 1.6 Roller Rockers
GMPP LT4 Valve Springs
GMPP Lifter Set (Replaced at 78,7XX miles)
Hypertech 160* Thermostat
Exhaust:
Pacesetter Ceramic Coated Longtube Headers
3" Off Road Y-Pipe & Custom 3" Catback
3" QTP Cutout
Flowmaster 40 Series Muffler with Dumps
Drivetrain:
Pro-built Automatics Rebuilt 4L60E with cryoed reverse/input drum and HD sleeve
Transgo Vacuum Modulator & Transgo Stage II Shift Kit
PI Vigilante 3000 Stall
LS1 Aluminum Driveshaft with Lakewood Performance U-Joints
B & M Tranny Cooler
T/A Performance Rear End Girdle
Suspension:
Spohn Tubular Lower Control Arms
Spohn Lower Control Arm Relocation Brackets
Spohn Strut Tower Brace
Spohn Subframe Connectors
Ignition:
NGK TR5 Spark Plugs
MSD 8.5" Super Conductor Plug Wires
MSD Ignition Coil
LT4 Knock Module
Jeremy Formato Dynotune
and the car is a 94 if it helps.
thanks Trevor
Last edited by Trevor.j; Aug 24, 2009 at 04:21 PM.
Take a look at the matted TPS voltage and make sure
that is less than fault threshold (I don't know LT1s
but there is bound to be one, and misbehaviors if you
go over the top).
that is less than fault threshold (I don't know LT1s
but there is bound to be one, and misbehaviors if you
go over the top).
i have not. its been a while since the car has been tuned. and just wanted to get this problem taking care of. if i have to i will go to him. but the tune was and still seems to be spot on besides this problem. so im looking for a quick fix
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A tune does not just change and I would say that there could be a sensor or trans issue. Before you go making any tuning changes I would check out some other things first.
Mike Norris
Mike Norris
On The Tree
Joined: Apr 2002
Posts: 140
Likes: 0
From: Tampa
I know Jeremy is up in PA tuning this week, but if you have any questions, feel free to contact him on his cell at 813 495 8778.
i have a lt1 car that was originally tuned by Jeremy Formato.(the car runs great intill wot) but out of no where, it seemed like the tune or shift points have been out of wack. it only happens at WOT, and it seems like the car is trying to shift over the redline. and it happens in every gear, and in every mph. i dont know if you can help me out with this or not? i can get video of the car doing it, also. i hopefully have someone that can help, just waiting on his response. The mods are
Engine:
GMPP 218/228 .525"/.525" Cam
GMPP 1.6 Roller Rockers
GMPP LT4 Valve Springs
GMPP Lifter Set (Replaced at 78,7XX miles)
Hypertech 160* Thermostat
Exhaust:
Pacesetter Ceramic Coated Longtube Headers
3" Off Road Y-Pipe & Custom 3" Catback
3" QTP Cutout
Flowmaster 40 Series Muffler with Dumps
Drivetrain:
Pro-built Automatics Rebuilt 4L60E with cryoed reverse/input drum and HD sleeve
Transgo Vacuum Modulator & Transgo Stage II Shift Kit
PI Vigilante 3000 Stall
LS1 Aluminum Driveshaft with Lakewood Performance U-Joints
B & M Tranny Cooler
T/A Performance Rear End Girdle
Suspension:
Spohn Tubular Lower Control Arms
Spohn Lower Control Arm Relocation Brackets
Spohn Strut Tower Brace
Spohn Subframe Connectors
Ignition:
NGK TR5 Spark Plugs
MSD 8.5" Super Conductor Plug Wires
MSD Ignition Coil
LT4 Knock Module
Jeremy Formato Dynotune
and the car is a 94 if it helps.
thanks Trevor
Engine:
GMPP 218/228 .525"/.525" Cam
GMPP 1.6 Roller Rockers
GMPP LT4 Valve Springs
GMPP Lifter Set (Replaced at 78,7XX miles)
Hypertech 160* Thermostat
Exhaust:
Pacesetter Ceramic Coated Longtube Headers
3" Off Road Y-Pipe & Custom 3" Catback
3" QTP Cutout
Flowmaster 40 Series Muffler with Dumps
Drivetrain:
Pro-built Automatics Rebuilt 4L60E with cryoed reverse/input drum and HD sleeve
Transgo Vacuum Modulator & Transgo Stage II Shift Kit
PI Vigilante 3000 Stall
LS1 Aluminum Driveshaft with Lakewood Performance U-Joints
B & M Tranny Cooler
T/A Performance Rear End Girdle
Suspension:
Spohn Tubular Lower Control Arms
Spohn Lower Control Arm Relocation Brackets
Spohn Strut Tower Brace
Spohn Subframe Connectors
Ignition:
NGK TR5 Spark Plugs
MSD 8.5" Super Conductor Plug Wires
MSD Ignition Coil
LT4 Knock Module
Jeremy Formato Dynotune
and the car is a 94 if it helps.
thanks Trevor
