Fuel pump confusion for e85
#1
Fuel pump confusion for e85
Been wanting to add E85 capabilities to my 94 NA8. I was told to get a 340lph pump to get to 250whp with my 2554r by a local tuner if I want to get there with e85. My previous assumption was that a 255lph or 190lph pump would suffice for that power level and e85. Which pump size would be best? I see people loving the DW300 for e85 stuff so I'm leaning towards that one, but won't that overwhelm the stock FPR? Even more than the 255? Tuner mentioned nothing of changing that out (I feel like I don't see it mentioned much on here, but I could be wrong). Is it not an issue cause I'm on MS3X and can just tune the idle/vacuum areas for the increased fuel? Sorry if its a repeated question, just kinda confused. Cars got 640cc injectors, everything else fuel-related is stock.
Edit: I guess another question I got is that, is this an issue we have to deal with nowadays? I feel like alot of the posts I see talking about overwhelming the FPR are kind of older threads. Maybe I'm not looking hard enough.
Edit: I guess another question I got is that, is this an issue we have to deal with nowadays? I feel like alot of the posts I see talking about overwhelming the FPR are kind of older threads. Maybe I'm not looking hard enough.
Last edited by Spei; 08-11-2020 at 02:17 AM.
#6
I was only on call with him discussing pricing and not setting up an appointment or anything. I also figured he was maybe assuming that I was gonna run straight e85 from then on after getting the tune, I dunno. From what I know he's pretty reputable with miatas.
Edit: Did some more reading. I've heard the DW200 will overwhelm it and I've read it won't. Guess it just depends on my FPR...
Last edited by Spei; 08-11-2020 at 12:57 PM.
#11
https://www.miataturbo.net/diy-turbo...-300-hp-96009/
https://www.miataturbo.net/diy-turbo...big-post-4288/
EDIT: found another https://www.miataturbo.net/ecus-tuni...p-84246/page3/
https://www.miataturbo.net/diy-turbo...big-post-4288/
EDIT: found another https://www.miataturbo.net/ecus-tuni...p-84246/page3/
Last edited by Spei; 08-12-2020 at 04:33 AM.
#17
DW200 failed on my car after only a couple years on stock (NB) FPR. It also may have contributed to my weird rich/lean variations that made tuning difficult. It is all speculation of course, but with other peoples experiences similar to mine and the common denominator of the DW200 I am less than trustful of that unit. I haven't heard any problems with the DW300 on an aftermarket FPR though, so that is the direction I am going.
#18
DW200 failed on my car after only a couple years on stock (NB) FPR. It also may have contributed to my weird rich/lean variations that made tuning difficult. It is all speculation of course, but with other peoples experiences similar to mine and the common denominator of the DW200 I am less than trustful of that unit. I haven't heard any problems with the DW300 on an aftermarket FPR though, so that is the direction I am going.