I still run on a chipped ECU and i do not find any problems starting up. It starts first time from cold and idles fine untill it settles down to around 900rpm. If any, it might cause problems (rough idling) for the first minute or two after you start from a stone cold engine in freezing weather. I do not have such problems but we do not have freezing weather here.
I was one of the first to do it and my reasoning was maintainability.
By removing all the pipework from the back of the manifold it means you can take it off completely in 20 minutes. If I've had any problems around the back of the engine such as water hoses, wiring, starter, pedal box, sensors, oil etc then I've always taken the manifold off first to get a better look as it's so easy.
It makes life much easier for servicing, and also less hoses = less leaking problems. Removing the coolant passing through the manifold should reduce heat soak too. And lets not forget weight reduction of the extra coolant the standard system needs (I removed heater too) , the vacuum box and solenoid. :lol:
Hmmm.... if my car's already on axle stands not going anywhere, is this something I should be considering? - Do you need to buy new gaskets etc if you're taking the inlet manifold off to play with the plumbing?
How much do you take out though?, so far ive only removed the small water pipes to the back of the plenum but left the link through the iar so it still see's heat, would removing the iar not cause starting problems?
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