kaneryan Posted October 10, 2014 Share Posted October 10, 2014 what he said ^^^ mine were gonna be getting around the 100% around the 360kw mark with an E85 walbro pump so i upgraded to 2000cc inj. food for thought Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7405641 Share on other sites More sharing options...
Ben C34 Posted October 10, 2014 Share Posted October 10, 2014 what he said ^^^ mine were gonna be getting around the 100% around the 360kw mark with an E85 walbro pump so i upgraded to 2000cc inj. food for thought Did you check and monitor fuel pressure on the dyno? Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7405665 Share on other sites More sharing options...
kaneryan Posted October 10, 2014 Share Posted October 10, 2014 not sure man, Tuner did it all. what he says i would trust as his work is the best! Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7405673 Share on other sites More sharing options...
TheGeniusMoose Posted October 11, 2014 Author Share Posted October 11, 2014 So I've just taken this ryco filter out.. Cannot blow through it. It's clogged so bad it's not funny. As in, air goes in and doesn't come out the other side clogged . Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406095 Share on other sites More sharing options...
TheGeniusMoose Posted October 11, 2014 Author Share Posted October 11, 2014 Replaced filter, 80% duty in 3rd at 7500 rpm. Not sure how that compares to 4th gear on dyno however. 1 Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406140 Share on other sites More sharing options...
kaneryan Posted October 11, 2014 Share Posted October 11, 2014 from my experience hearing from people running E85 i dont think you get much change from 1000cc inj, after about 350kw Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406181 Share on other sites More sharing options...
TheGeniusMoose Posted October 11, 2014 Author Share Posted October 11, 2014 The guy that built my car is running same injectors at 440kw in an r32 GTR and a T88 which has me confused. Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406202 Share on other sites More sharing options...
kaneryan Posted October 11, 2014 Share Posted October 11, 2014 from my experience hearing from people running E85 i dont think you get much change from 1000cc inj, after about 350kw **** running E85. is the guy that built your car running E85? correct me if im wrong but running more fuel pressure you can use less duty cycle?? Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406238 Share on other sites More sharing options...
iruvyouskyrine Posted October 11, 2014 Share Posted October 11, 2014 Correct as more fuel gets injected for the same period the injectors are open. Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406319 Share on other sites More sharing options...
kaneryan Posted October 11, 2014 Share Posted October 11, 2014 well makes sense as i was running high around the 360kw range on e85 20psi so i swapped out my 1000cc for 2000cc standard FPR Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406321 Share on other sites More sharing options...
Kinkstaah Posted October 11, 2014 Share Posted October 11, 2014 Replaced filter, 80% duty in 3rd at 7500 rpm. Not sure how that compares to 4th gear on dyno however. This was my exact experience. I have heard other people run into walls at ~330-370kw with mysterious fuel problems on R34's when everything else seems ok, replace the filter. At least on E85. I upgraded to 1400's thinking my 1000's had maxxed out but found out that wasn't the case. 1000's on e85 seem to really get hairy at 400, though some people reckon they've done 450+ on them? Can never really have too much injector headroom nowadays anyway. Good enough excuse to upgrade Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406411 Share on other sites More sharing options...
Simon-S14 Posted October 11, 2014 Share Posted October 11, 2014 if your car was tuned with a partially blocked filter and you have now replaced it, then the fuel map will be out on the tune. will probably need a touch up 1 Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406556 Share on other sites More sharing options...
scotty nm35 Posted October 12, 2014 Share Posted October 12, 2014 Correct, the entire map will probably be rich now. Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406934 Share on other sites More sharing options...
cobrAA Posted October 12, 2014 Share Posted October 12, 2014 Exactly, that is how we found the flow was dropping off. You have no idea what is happening without a gauge on the feed line, and you need to be on a dyno if the gauge is in the engine bay. Speaking of which, it seems some factory regs can be too small for the 460L pumps, they don't bypass enough. The S15 I worked on recently was tuned at 60psi at idle, no wonder the car wouldn't idle well with twice the fuel pressure it should have had. It is definitely an important test that should be checked after any major fuel system mods. are the nismo considered factory reg ? Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406938 Share on other sites More sharing options...
scotty nm35 Posted October 12, 2014 Share Posted October 12, 2014 No, they seem to work fine. I only realised the SR regs were too small after having idle issues on petrol after installing a 460L intank. Checked the pressure and found it way too high. Perhaps the RB's will be fine as there are 2 more injectors bleeding fuel pressure off... Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7406942 Share on other sites More sharing options...
ltcree Posted October 15, 2014 Share Posted October 15, 2014 Not sure how big the lines are on a r34 but my 33 had 6mm id lines (stock) and I had too upgrade to 8mm id line as it was restricting flow. Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7408663 Share on other sites More sharing options...
TheGeniusMoose Posted October 15, 2014 Author Share Posted October 15, 2014 Confirmed all good now! 1 Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7408870 Share on other sites More sharing options...
PranK Posted October 15, 2014 Share Posted October 15, 2014 Confirmed all good now! What was the final silver bullet? Was a retune required? Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7408907 Share on other sites More sharing options...
TheGeniusMoose Posted October 15, 2014 Author Share Posted October 15, 2014 Retune will be required but that'll be a next week thing. Whole map is rich now. Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7408924 Share on other sites More sharing options...
Kinkstaah Posted October 15, 2014 Share Posted October 15, 2014 holy shit someone benefitted from my various miseries karma come at me any time now 3 Link to comment https://www.sau.com.au/forums/topic/449513-1000ccs-maxed-out-at-~500hp-e85-walbro-460/page/2/#findComment-7409096 Share on other sites More sharing options...
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