I think what he is trying to say is that he is planning on going with a turbo set up in the near future and that he wanting to know what kind of fuel system upgrades he should spend money on in preparation for his turbo build.
Yes putting larger injectors on a OEM engine with out any kind of aftermarket ECU will get you nothing. The stock FPR and ECU will just limit the amount of fuel the engine gets. Even if the FPR and ECU did not cut back the fuel, the engine would not be able to burn all the extra fuel and you would just run rich or flood the engine.
I recommend reading through the Forced Induction section of R3V to see what others have done/used.
Seams like some people have got 20psi out of their OEM pumps and others have had their pumps die at 10psi. I think if you bought a new OEM pump and some larger injectors you would be good for about 14psi with a aftermarket adjustable fuel regulator. You can get an affordable fuel regulator (FPR) at Ireland Engineering.
http://www.iemotorsport.com/bmw/E30-...e30adjreg.html
Yes putting larger injectors on a OEM engine with out any kind of aftermarket ECU will get you nothing. The stock FPR and ECU will just limit the amount of fuel the engine gets. Even if the FPR and ECU did not cut back the fuel, the engine would not be able to burn all the extra fuel and you would just run rich or flood the engine.
I recommend reading through the Forced Induction section of R3V to see what others have done/used.
Seams like some people have got 20psi out of their OEM pumps and others have had their pumps die at 10psi. I think if you bought a new OEM pump and some larger injectors you would be good for about 14psi with a aftermarket adjustable fuel regulator. You can get an affordable fuel regulator (FPR) at Ireland Engineering.
http://www.iemotorsport.com/bmw/E30-...e30adjreg.html
Woooow. Thanks everyone for talking to me like a dumbass.
I don't have a stock ecu. Otherwise why put in any injectors if the computer is telling them to do the same shit.
A lot of drift guys upgrade their fuel pumps when they get larger injectors and a mapped ecu for the injectors/whatever power bolt ons are there.
I feel like stock pumps on larger injectors meant to run at 3.5bar, 3.5bar u said right, are running at full load just to keep up with the larger injector fuel needs. It may only be SLIGHTLY larger but it's not what the stock injectors were. Hence possibly making the pumps work harder... My coworker explained it to me in a more scientific way. But he was saying something like at idle the pumps at full volume trying to keep up with the tune. Idk
To me it seems like if your going beyond stock injectors it may be time for pumps that can flow better than stock also. Just kinda makes sense to me....idk
.....so which fuel pump is actually replaced when ppl put in a walbro 255 or something?? That's what I'm not sure of. All my buddies have 1 fuel pump. I don't like asking e30 ppl cause most ppl who haven't tinkered with what I'm asking about have a short useless answer.
I have a higher volume pump for the inside and outside of tank at this point. I'd sell one if I only need one. But why have two different flow rated pumps...the two pumps is throwing me off in general
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