map / Cam

superloweb · 27-08-2005, 11:26 PM

i recently made some inquiries into a cam for my ebII and was told that an engine with a map sensor will never run proper with a cam due to the pressure constantly changin, anyone else agree or dissagree

stockstandard · 27-08-2005, 11:31 PM

depends how big the cam is and if you change the tune or not.

Mildish cams are fine. Bigger cams will work, but benefit from a chip of some sort.

JMM make a range of cams that work with the stock ecu, but cost 4 times as much as other cams.

jonbays · 28-08-2005, 11:28 AM

This is essentially true which is why "our good friends" at Jim Mock Motorsport can charge so well for their reground cams for falcons because they have done the R&D a cam grinder can't to ensure their cams do work with the stock ecu.

That said if you are after more power you will soon be adding a chip to bypass the ecu and get real control over your mixtures soon enough anyway.

Gubas · 01-09-2005, 06:43 PM

I put a Wade reground cam in my car that i sourced in Geelong, and got it A LOT cheaper then JMM offers, basically for the same cam. JMM even claimed the cam I bought doesnt work!!! My revs are all over the shop from the cam. Sometimes the idle hunts 200rpm. So I disconnected the air feedback sensor on the throttle body, and it doesnt hunt anymore. But, it is hard to start on a cold motor. I really need an after market computer, and plud that sensor back in. Next mod. for me. And chip!!!