Cosworth base idle.
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PassionFord Post Whore!!
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From: Bangor, Northern Ireland
Cheers guys 
It needs adjusted as I've changed the little bypass pipe on my RS 500 throttlebody. I was using -8 hose that due to the angle the pipe runs was kinked over. Now I've fitted a genuine pipe that has the proper shape, the idle has gone up a little bit. It's enough to annoy me though lol.
It needs adjusted as I've changed the little bypass pipe on my RS 500 throttlebody. I was using -8 hose that due to the angle the pipe runs was kinked over. Now I've fitted a genuine pipe that has the proper shape, the idle has gone up a little bit. It's enough to annoy me though lol.
PassionFords Creator
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From: Blackpool, UK Destination: Rev limiter
Hi Paul,
Get her fully hot, fans been in and gone back off, all electrical load off and then tweak the base bypass screw to achieve 900 - 950rpm.
At that point, recheck the emissions are correct and if not, tweak them. This may necessitate and other change to the base idle speed, and if so, you will then need to recheck emissions. Repeat until both are as required and your done.
Get her fully hot, fans been in and gone back off, all electrical load off and then tweak the base bypass screw to achieve 900 - 950rpm.
At that point, recheck the emissions are correct and if not, tweak them. This may necessitate and other change to the base idle speed, and if so, you will then need to recheck emissions. Repeat until both are as required and your done.
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