the o/p was referring to running e85 if i read the original thread correctly. thats why i said the 1000 cc inj won't do him any good. use bigger injectors 1400cc and scale them for 93 oct. the e85 files uses way more fuel than gas and needs the bigger guns

 

Well if you run stock fuel pressure 1000cc injector is more than 1000cc. They are rated at 3 bars, our systems are 3.8 correct? It's twice the cost for 1300+cc as 1000cc. If I run a 5 bar fpr on stock rails with 1000cc and a 450 pump, basically I can max out the flow of the pump, injectors, and stock rails and do it for pretty cheap. Then down the road when building the motor jump up to a 1600 or 2000cc with dual pumps and rails. Spend real money on the fuel system at that point.

 

Maxing out a fuel system to get 100 Hp at the risk of a 30,000$ motor is a risky proposition .

 

exactly. you are not underestimating the ability of just the 5bar to do what it should at that level though i'd guess that 1000 is pushing it and beyond that you've reached the inherent limitation of a 5bar if not in fact a single pump.

when when they work for over the 3.8 ( and up to a point..) they work just fine.

 

What am I really risking here? I'm upgrading the pump and the injectors, no different than anyone else doing a mild fuel system upgrade. Change lines all to e85 rated line and it no problem. I've done e85 systems on many cars as its what everyone up for track and fast street cars. Safety is all in the tuning. I'm not going to go ***** to the walls and try and make as much power as possible but an extra 75-100hp for a simple fuel system upgrade I would so anyway even running just pump gas is a no brainer.

Car will run pump 90% of the time. E85 will be run on track days and occasionally on the street

 

Are you agreeing with me or disagreeing lol, I can't tell.
I don't think I'm doing anything crazy here, am I wrong?
Like said I'd done lots of e85 stuff in the past. We have kinda crappy 91 octane here but we have awesome e85 (many station close to e90 in the summer).

I know on a V6 build on my 3 liter 6g72 (3000gt vr4), a single walbo 450, 1200cc injectors running 3bar, is enough for 750whp. That would be similar injectors flow as 1000cc at 3.8bar, just a little harder on the pump.

 

Whoever says they are using the stock maf with anything but stock turbo doesn't realize that the sensor get fully maxed out very quickly. You can have it in there and the car will drive fine at idle and cruise and even WOT can be fine as fueling is closed loop. But to say the stock maf is 'fine' is a huge mistake as it maxes out early and ECU goes blind to actual airflow.

 

agreeing with you that where you currently are and what you're running, the 5bar should be sufficient. but i have no familiarity with corn etc. only CA craptane. but on 91-93 i dont think ( from my limited knowledge ) you are maxing out the fuel you are supplying, though a 5 bar is essentially tricking the system. it still is highly effective.. until its NOT,..and 550/575 rwhp is about "it".

 

Well that will be combined with the 450 pump and 1000cc injectors. On corn that's plenty run 650whp+ if youre running 5 bar.