TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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I've been searching and can't seem to find a good picture or diagram of where the vacuum hose should connect to the plenum. I've converted from a MAF system to a MAP system and need to run vacuum hose to the MAP sensor from the plenum. Do I need to tap a hole and install a fitting or use a T of some sort? A picture would be great but any information that may help would be good too.
there are 2 vac ports on the pass side of the plenum one for the pressure regulator and the larger one is for the hvac. I would cut a t into the hvac line as close to the plenum as possible.
__________________ 89 Formula, Maui Blue,355 TPI(used to be TBI) Auto, B&M shift kit, afpr, 3.42 Richmond gears, auburn posi. 3" Flowmaster cat back system.
86 Camaro Z28 LB9 T-tops pretty much stock
current ride 2004 Cadillac Deville.
there are 2 vac ports on the pass side of the plenum one for the pressure regulator and the larger one is for the hvac. I would cut a t into the hvac line as close to the plenum as possible.
I know exactly which port you're talking about and I will T it somehow. What I don't know is what hvac means? Thanks for your help.
Glad you found a solution. On the same note if anyone can please tell me how to convert my MAF to MAP on my vehicle i would appreciate it. I just purchased a FAST XFI ECU. Fortunately it came with the MAP sensor in the kit. All i need to do install it somehow...I own a 1987 IROC TPI (Supercharged 350)
