SACTX
Well-Known Member
I'm going to be documenting and asking for help in tuning my car for the TVS with ZZP stage 2 Cams.
To start, my donor came with GM's stage 2 kit. Tune, 42lb injectors, and 80mm pully. I semi-tuned the MAF using the fuel trims as I was running up to 35% lean at times. It ran like a scalded ape after that.
The new mods will be as follows.
TVS with 2.9 pully
ZZP Stage 2 supercharged cams
ZZP 78lb valve springs and Ti retainers
ATI superdamper 5% overdrive pully
Bosh 60lb injectors (probably switching to 80's as I'm thinking they may be needed. I'd prefer to not switch)
OTTP boost referenced fuel system with dual supply lines.
1 step cooler NGK Iridium plugs
With this tune I'd like to get running on a MAF only tune and not nuke the motor before starting to get that tune dialed in.
I've been looking at videos on Goat Rope Garage and looked at other tunes. I have not been able to find any shared tunes with Stage 2 Cams so that part is a big question for me. I was able to find a tune running 60lb injectors with a TVS. I look at a lot of changes (mainly fueling and spark) in that tune and transferred most of them over. There were a bunch of changes in that tune under injector control that I didn't understand. It had "Flow Rate vs Volts" at 1.3 and there were a lot of changes to the "Offset vs Volts vs MAP" and "Offset vs Volts vs VAC" tables. I didn't change anything in these tables yet.
I took another 10% out of the timing on that tune to start and set the injectors flow rate vs. kpa to 63lb across the board. I kept the rest of the changes from the modified tune that I had before like MAF, DFCO, etc.
Any help on adjusting this tune to get the car running and fine tuning once it's running would be greatly appreciated. I know there are at least 3 other people planning on installing a TVS so a lot of what we do here will probably help them.
If anyone has a TVS running and would like to share their tune, that would also be appreciated.
I'm still about 2-3 weeks away from getting everything in and back together. I'm still learning so don't be afraid to call me out on anything that looks wonky!
My tune is attached as well as the TVS 60s MAF tune that I found and referenced (used) as a template for a lot of changes.
Thank you guys!
To start, my donor came with GM's stage 2 kit. Tune, 42lb injectors, and 80mm pully. I semi-tuned the MAF using the fuel trims as I was running up to 35% lean at times. It ran like a scalded ape after that.
The new mods will be as follows.
TVS with 2.9 pully
ZZP Stage 2 supercharged cams
ZZP 78lb valve springs and Ti retainers
ATI superdamper 5% overdrive pully
Bosh 60lb injectors (probably switching to 80's as I'm thinking they may be needed. I'd prefer to not switch)
OTTP boost referenced fuel system with dual supply lines.
1 step cooler NGK Iridium plugs
With this tune I'd like to get running on a MAF only tune and not nuke the motor before starting to get that tune dialed in.
I've been looking at videos on Goat Rope Garage and looked at other tunes. I have not been able to find any shared tunes with Stage 2 Cams so that part is a big question for me. I was able to find a tune running 60lb injectors with a TVS. I look at a lot of changes (mainly fueling and spark) in that tune and transferred most of them over. There were a bunch of changes in that tune under injector control that I didn't understand. It had "Flow Rate vs Volts" at 1.3 and there were a lot of changes to the "Offset vs Volts vs MAP" and "Offset vs Volts vs VAC" tables. I didn't change anything in these tables yet.
I took another 10% out of the timing on that tune to start and set the injectors flow rate vs. kpa to 63lb across the board. I kept the rest of the changes from the modified tune that I had before like MAF, DFCO, etc.
Any help on adjusting this tune to get the car running and fine tuning once it's running would be greatly appreciated. I know there are at least 3 other people planning on installing a TVS so a lot of what we do here will probably help them.
If anyone has a TVS running and would like to share their tune, that would also be appreciated.
I'm still about 2-3 weeks away from getting everything in and back together. I'm still learning so don't be afraid to call me out on anything that looks wonky!
My tune is attached as well as the TVS 60s MAF tune that I found and referenced (used) as a template for a lot of changes.
Thank you guys!
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