Jet size questions - WRX
I've used the 'lovely' PHPBB search facility and have found a few entries of the jet sizes people are using...
But is there a specific formula to use, I understand that 10 - 15% of the fuel used is the guideline, but given that the fuel used across the entire rev range will be different is it a compromise? I run 4 x 700cc injectors at about 68% IDC (@ 7000rpm), currently around the 199kW @ the wheels mark. Currently I'm using the 0.5mm jet in a 1S system but would like to know if running a 0.7mm jet as a few others are using would be a better solution. Jet location is in my FMIC piping, about 700mm before the TB. Cheers and thanks Brett |
Re: Jet size questions - WRX
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Richard |
Could you post some pictures ?
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Hi Richard I'll grab some pictures as soon as I can.
I'll be looking at the 2d system when I get a chance, as well as upgrading from my current aftermarket engine management (a Link) to a Motec in the near future. Cheers Brett |
Some pictures:
Jet Mounting. http://www.griffin.net.au/WRX/WI/DSC_11932.jpg Relative to the Throttle Body. http://www.griffin.net.au/WRX/WI/DSC_11936.jpg Another angle of the above. http://www.griffin.net.au/WRX/WI/DSC_11939.jpg Cheers Brett |
They are excellent pictures.
I just wonder if you can increase the methanol percentage since you are in the middle of summer months. 0.5mm for neat water and 0.7mm with 50W/50M mix to aid induction cooling. Richard Quote:
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