Ryoishikawa Posted April 21, 2011 Share Posted April 21, 2011 Rite I have a rs1800 130spec engine with throttle body and ph3 Newman cams. Megasquirt ecu, 4 branch manifold . Sports cat and full exhaust system. At the moment I have bosch 0280150420 injectors and I'm running them about 3 bar. Would you say these injectors are rite Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 That depends, was it mapped with those injectors at that fuel pressure? As soon as you change anything, fuel pressure, injectors, cams, it'll throw the mapping out and it won't run right. I get the feeling you've done this in the past without going back to your tuner and then wondered why it's running crap. Replacing 'rite' with 'suitable', then yes those injectors are capable of fuelling your engine spec adequately. They'll do up to about 250bhp at 3.5 bar at typical N/A mixtures. Link to comment Share on other sites More sharing options...
Ryoishikawa Posted April 21, 2011 Author Share Posted April 21, 2011 That depends, was it mapped with those injectors at that fuel pressure? As soon as you change anything, fuel pressure, injectors, cams, it'll throw the mapping out and it won't run right. I get the feeling you've done this in the past without going back to your tuner and then wondered why it's running crap. Replacing 'rite' with 'suitable', then yes those injectors are capable of fuelling your engine spec adequately. They'll do up to about 250bhp at 3.5 bar at typical N/A mixtures. actually i had it mapped by power engineering last month when i had the cams, vernier pulleys etc put in by them. i just can't seem to find a new set or refurbed set of those injectors for sale Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 actually i had it mapped by power engineering last month when i had the cams, vernier pulleys etc put in by them. i just can't seem to find a new set or refurbed set of those injectors for sale Yes, and you were asking about what fuel pressure to run and stuff before that. Those injectors flow approx. 300cc/min @ 3 bar and are high impedence. There are gazillions of equivalent injectors out there. Link to comment Share on other sites More sharing options...
Ryoishikawa Posted April 21, 2011 Author Share Posted April 21, 2011 yes i did stu only because it was lumpy before i changed anything, thing is a seal went. the injectors i have was used so im looking to buy new ones as its the best thing to do Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 You want to buy new injectors rather than use old ones? What happens when the new ones are used, will you buy new ones again? Link to comment Share on other sites More sharing options...
Ryoishikawa Posted April 21, 2011 Author Share Posted April 21, 2011 the ones i have now was not tested proir to fitting, and i dont know the milege of them and if one of them are out will cause over fueling Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 Why don't you send them off to be reconditioned/tested? Then at least you'll know if that was causing the problem you appear to have but aren't mentioning. Link to comment Share on other sites More sharing options...
Ryoishikawa Posted April 21, 2011 Author Share Posted April 21, 2011 problem im having is my spark plugs are getting black on the spark side which causes my car to run lumpy sorry i forgot i was running 3.5 bar i thought that was the problem so i put it down to 3bar Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 What fuel pressure was it mapped at? As I said in my first reply, you can't change things and expect it to run right. If your plugs are getting fouled, then find a decent tuner to map it. Link to comment Share on other sites More sharing options...
Ryoishikawa Posted April 21, 2011 Author Share Posted April 21, 2011 when power engineering mapped it last month he said the last people that did it put the Ignition up way to high, and that will cause my spark plugs to do what they was. thought i post a thread up as your give me a answer no messing around with you (y) Link to comment Share on other sites More sharing options...
Stu Posted April 21, 2011 Share Posted April 21, 2011 (edited) But if they've (PE) resolved the poor mapping (mtech?!) then surely the problem has gone away?............ Edited April 21, 2011 by Stu Link to comment Share on other sites More sharing options...
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