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04-23-2007 #1
Registered User
- Join Date
- Dec 2004
- Location
- North Jersey
- Posts
- 983
Running Rich With Bigger Throttlebody?
Hey all,
I recently swapped a 52mm throttlebody onto my ZZ4-cammed 355 TPI motor. Anyone have a guess as to why it would run richer at idle now with the bigger TB? If anything, I figured it would run leaner (more air with the same fuel trim) since I have not done any adjustments to the chip yet. Any advice? FWIW, I'm running a stock '87 F-body TPI harness and ECM, and have the ability to burn my own chips. I'm just not sure what direction to go, since I'm new to this!
Steve Ragusa - North Jersey
2006 Infiniti G35x
Former Build - 1988 Monte Carlo SS - ZZ4-cammed TPI 355, F-body serpentine conversion, World-Class 5-speed, Eibachs/Bilsteins, Howe tall LBJs, 34mm hollow front swaybar, 3/4" straight rear bar, 17" Coys C55s, 12" front discs, and more. Sold on 2/28/11.
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