The car is a 98 Vette and has an airbox and good size cam (236/605/112) along with headers. The tune is good except for hot start-up. The car wants to surge between 500-1500 RPM's. I can crack the throttle and it will settle down for a few seconds and then will go back to surging. Any ideas where to look?
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Michigan Snowmobiler
1969 Firebird: 11.67@114 [email protected] 1/8 1.70 60 ft. EPS cam 234/246 .602.606 114+3, 6.0 LQ4, L92 heads milled 10.5:1, Ported L76 intake, ported 90mm Holley TB, 100mm MAF, FIC Custom injectors, Hooker LT, PYPES dual exhaust with an X pipe, 4L65e with all of the good parts inside, FTI 4000 RPM Stall, 12 bolt with 3.73 gears. HP Tuner tuned by me
Yes, please read the stickies, they are there for a reason.Originally Posted by 69lt1bird
I am willing to bet you don't have enough airflow and it also sounds like your spark corrections are not setup correctly.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
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