esskae

I have a '19 Coupe and just recently added DPs and a stage 2 tune. Do I need anything other than upgraded LPFP & HPFP (looking at Spool) and to adjust the tune to run full E85?

Balr14

This from C43HeartBoost when I mentioned the same: "You cannot run straight e85 in a C43 without a HPFP, LPFP and a custom tune. All in, with install, you are looking at about $7,500 to $9,000."

Star4life

also will need upgraded fuel rail. I am selling one if you need

esskae

I can't find this part on SpoolPerformance. Do you have more info on it?
Is yours new or used?

Star4life

it is new, and you need to contact direct to order. its a modified oem rail. the rail new costs $350-$400 then plus the modification.

cool_guy

Is it possible to run straight e85 and has anyone done this? Because I keep hearing e50 is the max.

esskae

I contacted spool performance and they told me that with the hpfp and lpfp, and custom tune that we can run e85 straight.
I also got an upgraded fuel rail just in case. I haven't installed the parts yet but I'll update when I do

C43HeartBoost

Unless the ECU can adjust based upon ethanol content (which is usually only available with aftermarket ecu brands like AEM etc), most tuners will tune “full e85” to an e50 to e70 level given the variance of pump e85. I know the e85 pumps I frequent in Southern California all have a sticker warning that it will vary from e50 to e85. Most people do not daily drive on cans of VP e85 which is guaranteed to be full e85.

Star4life

martin tuning has a plug and play LPFP which i recommend over the spool pump. the spool pump requires extra wiring and is a pain.

for HPFP and rail, contact spool performance but you can also get through martin tuning in a package deal depending which lpfp you want to run.