Looooong time lurker, well before I ever registered or bought the MPV13.
I'll cut to the chase. I have a 2019 Corvette Grand Sport with the LT1 and 7spd manual transmission. It has the following mods....
- Ported cylinder heads
- Nick Williams 103mm throttle body
- Mamo ported MSD intake manifold
- AFE cold air intake
- LG full length headers
- G-sport (GESI) Gen 2 cats rated at 500hp/bank
- DoD deleted
- GPI SS3 LT cam (pic of cam card below)
- RPS Billet Carbon Street Twin Clutch w/Aluminum Flywheel. This setup is ~42lbs lighter than stock. The revs are awesome and Active Rev Match works fantastic. However, I have to believe the lack of mass is what's contributing to my issue
Dyno: 570 rwhp / 493 lb-ft of torque
The idle is fine, LTFTs look very good. Nothing wonky with the timing that I see. The Idle External Load table lines up very well with the delivered engine torque. It drives very well and as a track car it does outstanding on the road course
Issue....When slowing to stop (coasting in gear or using the brakes) and I push the clutch in, the RPMs rapidly drop and 25% of the time the engine dies.
Help Needed: Can someone point me in the right direction regarding what table(s) and/or factor(s) to work on please? It seems like I just need the rpms to not drop as quickly. As soon as I go "clutch in", the rpms drop so low the engine often can't recover
GPI SS3 LT Cam Card.jpg
Attachment 132438
Thank you very much for any assistance you can offer. I've searched but have come up empty.