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Renault 5 GT Turbo / Mixture and idle speed
« on: 13:31, Tue 10 July 2012 »
Folks what is the ideal idle speed for the CJ1 and what sort of mixture should it be set to at the required idle.

For info mine is idling at 1100rpm at 3.5%, is this micxture too low, should it be more like 4>4.5%.

Renault 5 GT Turbo / Stage 2 turbo technics turbo
« on: 00:43, Tue 10 July 2012 »
Hi folks I am new to this forum and im seeking a little advice.

I have a renault 5 turbo and to cut a long story short it was running a turbo technics stage 3 turbo and on the rollers it made 210 at the wheels, the problem was it was way too laggy round town. Because of the lag I decided to downsize it to the smaller stage 2 turbo that has a t25 compressor and t2 turbine houding etc. Whilst the turbo comes onto boost far faster it feels like i have lost too much power and i am thinking of going back to the stage 3.

What do you think I should do as I was expecting the stage 2 to spin up to boost really fast but I find that it struggles to build more boost after say 17psi and I have tried everything, checked for boost leaks, altered the wastegate etc etc I have even pulled the wastegate pipe off to see if the turbo will cary on boosting but it appears to struggle ( the engine is built to take big boost so i wasnt worried) is it a case that i have a dodgy turbo as its near new with only around 200 miles on it from turbo technics or is this the nature od the smaller t2 exhaust housing.

Also I recently set the mixture to 3.5 at around 1200rpm. What should it be set at to ensure there is plenty of idle fuel to get the turbo spinning?

Sorry for all the questions but I am unsure of what to do.

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