sarjo Posted February 25, 2007 Share Posted February 25, 2007 I have read through many threads about this and people seem to be suggesting different fuel pressures. Obviously it will depend on the car but am now not sure what I should be trying to set mine to. Any suggestions? Link to comment Share on other sites More sharing options...
ajazyasin Posted February 25, 2007 Share Posted February 25, 2007 Id like to know as well. and do the following have to be considered when setting: Injector size? single or TT? after market rail? after market FPR? Link to comment Share on other sites More sharing options...
supra matt Posted February 25, 2007 Share Posted February 25, 2007 stock is 36 psi mate so try that Link to comment Share on other sites More sharing options...
JamieP Posted February 25, 2007 Share Posted February 25, 2007 Becarefull messing with fuel presure on a modified car jo. depends what your mapper set it at, if you set it to low you will be running lean as hell. Link to comment Share on other sites More sharing options...
sarjo Posted February 25, 2007 Author Share Posted February 25, 2007 Becarefull messing with fuel presure on a modified car jo. depends what your mapper set it at, if you set it to low you will be running lean as hell. Thats what I'm worried about too. I'm still having problems starting the car (my other thread). It seems that the fpr has moved somehow and adjusted itself down to nearly no pressure at all, which might account for why it isnt starting But cant remember what it was set at originally. I'm sure it was quite high? Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted February 25, 2007 Share Posted February 25, 2007 to give someone with some knowledge on here any idea of a safe PSI they may need info like ajaz was saying Injector size? fuel pump? stock rail? turbo? rough BHP you were making and at what BAR? Link to comment Share on other sites More sharing options...
supra matt Posted February 25, 2007 Share Posted February 25, 2007 just set it to 36 mate it will be fine to drive off boost like this , do you have a afr gauge in your car? Link to comment Share on other sites More sharing options...
sarjo Posted February 25, 2007 Author Share Posted February 25, 2007 Injectors 1000cc (put in by previous owner who wa going 800+bhp) AFtermarket fuel rail (not sure which one), twin fuel pumps, sinegle turbo running 510bhp at 1.1bar. Yes have got an afr in car. Going to set at 36psi just to try and get her started. Link to comment Share on other sites More sharing options...
JamieP Posted February 25, 2007 Share Posted February 25, 2007 If you have an afr gauge you will be able to see if its safe to drive or not at whatever you set the fp at, just get it to a mapper to check once you have it started:) Link to comment Share on other sites More sharing options...
supra matt Posted February 25, 2007 Share Posted February 25, 2007 should start fine with that , once started let it warm up and check you afr's should be about 14.7 on idol if there low then just twick your fpr till you see 14.7 ,, As for setting dont forget to take of the vacum line off the fpr , Link to comment Share on other sites More sharing options...
sarjo Posted February 25, 2007 Author Share Posted February 25, 2007 As for setting dont forget to take of the vacum line off the fpr , Good point - thanks. Link to comment Share on other sites More sharing options...
supra matt Posted February 25, 2007 Share Posted February 25, 2007 also if you been trying to start it with no joy you may of fluided the engine , so its best to remove all the plugs and the two 30 amp fuel injection fuses and turn the engine over a fue times to remove all the exsess fuel vapour in the cylinders and get it nice and try befor retrying , Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now