[detroitm2]

Originally Posted by ZM2

I think this all comes down to the E85 mix your tuning with. E50 and seem to not need an LPFP upgrade, unless you throw on a big turbo.

Are you doing full E85 or a mix?

Tuning for flex fuel, They're tuning with E85 right now.

[detroitm2]

Originally Posted by F87source

Yeah I expected that, lpfps can't flow enough to max out a stage 2 hpfp upgrade, however I didn't expect you to be able to max out a stage 2 hpfp on the stock turbo, or come close enough to make the lpfp dip low enough to cause issues.


Anyways I look forward to your results.

Yeah, my thoughts as well. Dunno if thats a good thing or a bad things.

Now I'm on a mission to find an upgraded EKP module.. Seems EOS are the only players in the game, and $700 is a lot to stomach.

[F87source]

Originally Posted by detroitm2

Yeah, my thoughts as well. Dunno if thats a good thing or a bad things.

Now I'm on a mission to find an upgraded EKP module.. Seems EOS are the only players in the game, and $700 is a lot to stomach.

Well it was bound to happen so not good or bad, just inevitable.


Yeah you're going to need the EOS EKP, BMS was working on a secondary LPFP trigger that might have load splitting capabilities to help boost the factory EKP, but I do not know their progress on that. Maybe you can reach out to Terry and see if you can help on development.

[detroitm2]

So we put a super conservative tune on the car. I plan to go back at a later date for another map and juice it up a bit. But here's the dyno Graph from this week. Taken at 93 octane BM3 Stage 2, Ecutek 93 octane, and Ecutek E77.

I'll have some data logs and such later when they send them over to me.

[F87source]

Originally Posted by detroitm2

So we put a super conservative tune on the car. I plan to go back at a later date for another map and juice it up a bit. But here's the dyno Graph from this week. Taken at 93 octane BM3 Stage 2, Ecutek 93 octane, and Ecutek E77.

I'll have some data logs and such later when they send them over to me.

Looks good.

[detroitm2]

Originally Posted by F87source

Looks good.

Feels good too! My drive home, the car had around E30 in it after topping off with 93. Felt very strong. Can't wait to start playing with the tune

[detroitm2]

Originally Posted by F87source

Looks good.

LPFP was a Walbro 485 by the way.

[cookiesowns]

stock LPFP can actually flow a good amount on ethanol blend.., definitely enough to max out stock turbo..

[Dec540]

I'm running the stock turbo, stock LPFP with a Dorch Stage 2 HPFP and E85. I haven't had any issues, but it's hard to know how much our LPFP's are struggling as we don't have LPFP pressure sensors.

I'm thinking I'll end up upgrading my LPFP just to be safe.

[-Eidos]

Originally Posted by Dec540

I'm running the stock turbo, stock LPFP with a Dorch Stage 2 HPFP and E85. I haven't had any issues, but it's hard to know how much our LPFP's are struggling as we don't have LPFP pressure sensors.

I'm thinking I'll end up upgrading my LPFP just to be safe.

There may be cheaper ways to do this, but I plan on running the optional Injector Dynamics adapter for a Bosch fuel pressure sensor that mounts onto the side of their ID750 fuel filter (the one in the Bend Calibration flex fuel kit). This will hook up to the CAN bus via an interface that cookiesowns is working on. This should give us visibility into the low pressure side on the logs for our calibrations.

Photos on Injector Dynamic's site:

[F87source]

Motivs reflex canbus box has an input for an lpfp sensor with fittings that they also make for these bmws. so you could always go that route, and I heard that motiv was working with ecutek too so that's good.

[cookiesowns]

Originally Posted by F87source

Motivs reflex canbus box has an input for an lpfp sensor with fittings that they also make for these bmws. so you could always go that route, and I heard that motiv was working with ecutek too so that's good.

Yup. But it’s honestly overkill unless you’re doing PI. PI is kind of a no brainer with the reflex.

[F87source]

Originally Posted by cookiesowns

Yup. But it’s honestly overkill unless you’re doing PI. PI is kind of a no brainer with the reflex.

No you can use it for flex fuel as well so a double duty kind of thing, and you can also tag on water meth control too.

Plus it doesn't utilize the ugly and cluttered obd2 cable that goes into the cabin that the zeritronix unit has to use, if I recall correctly.

[Dj_Quik]

question for you gurus:

in what circumstances will the stock hpfp crash?

the reason i ask is because i was on the dyno yesterday to baseline my car on stage 1 91 oct tune. i live in vancouver and im running our crappy chevron 94 plus e15 blend (which is about equivalent to US 92 in washington). no problems with the run and car made only 350 whp and 402 wtq which is i guess is ok but the car ran smooth so im sorta happy. so i decided to flash stage 2 91 and try it. Now, at this time i only had a catless dp installed. I didnt have the requisite intercooler upgrade but i figured its just one run and we were gonna let the car cool down before the run. however, before the actual power run, the tuner ran the car to redline to let the ecu adapt to the stage 2 tune and then ran it for the actual power run right after. at about 5500 rpms, it was pretty obvious the car pulled timing. so i checked the logs and my timing advance in cylinder 4 dropped to 0 and hpfp wasnt reaching target pressure, so im assuming this is what youd call hpfp crashing? anyways, ive attached a couple logs. id appreciate it if anyone can shed some light into this. im wondering if this is an IAT or fueling issue? or if something else is going on?

run 1 stage 2 91
https://www.bootmod3.net/log?id=601a...90c662d69cf0b4
run2 stage 2 91
https://www.bootmod3.net/log?id=601a...729b5687b69830

the 1st and 2nd runs were stage 1 91, last run was stage 2 91

[designatedposter]

hpfp 'crashes' when it cannot output as much as the car is requesting. if the differential is great enough, the car has safeguards to protect the motor from running lean. in your first log, the worst case was at 5400rpm, where the car requested 2500psi, but the hpfp could only keep up 1500psi. i don't think this triggered any safeguards, but you are getting close.

the hpfp is mechicanically driven, so it is RPM dependent and there are efficiency zones. unfortunately, this car is known for having hpfp issues at this power level, but i think yours might be a little weaker than normal. how many miles?

[Pray for Mojo]

Originally Posted by Dj_Quik

question for you gurus:

in what circumstances will the stock hpfp crash?

the reason i ask is because i was on the dyno yesterday to baseline my car on stage 1 91 oct tune. i live in vancouver and im running our crappy chevron 94 plus e15 blend (which is about equivalent to US 92 in washington). no problems with the run and car made only 350 whp and 402 wtq which is i guess is ok but the car ran smooth so im sorta happy. so i decided to flash stage 2 91 and try it. Now, at this time i only had a catless dp installed. I didnt have the requisite intercooler upgrade but i figured its just one run and we were gonna let the car cool down before the run. however, before the actual power run, the tuner ran the car to redline to let the ecu adapt to the stage 2 tune and then ran it for the actual power run right after. at about 5500 rpms, it was pretty obvious the car pulled timing. so i checked the logs and my timing advance in cylinder 4 dropped to 0 and hpfp wasnt reaching target pressure, so im assuming this is what youd call hpfp crashing? anyways, ive attached a couple logs. id appreciate it if anyone can shed some light into this. im wondering if this is an IAT or fueling issue? or if something else is going on?

run 1 stage 2 91
https://www.bootmod3.net/log?id=601a...90c662d69cf0b4
run2 stage 2 91
https://www.bootmod3.net/log?id=601a...729b5687b69830

the 1st and 2nd runs were stage 1 91, last run was stage 2 91

Your fuel blend is a bit lackluster unfortunately. It's not awful but you're probably losing a bit of power with the timing corrections. They opened a Chevron here recently and the 94 had my car running pretty poorly, I switched back to Husky 94 and it was better. I would recommend running 1/4-1/3 can of Boostane pro with Petro Ultra 94 or another E10 fuel, the big selling point for the Chevron is no ethanol, but I think that's actually bad for our tuned cars.

[Dj_Quik]

Originally Posted by designatedposter

hpfp 'crashes' when it cannot output as much as the car is requesting. if the differential is great enough, the car has safeguards to protect the motor from running lean. in your first log, the worst case was at 5400rpm, where the car requested 2500psi, but the hpfp could only keep up 1500psi. i don't think this triggered any safeguards, but you are getting close.

the hpfp is mechicanically driven, so it is RPM dependent and there are efficiency zones. unfortunately, this car is known for having hpfp issues at this power level, but i think yours might be a little weaker than normal. how many miles?

50000 kms. Yeah i think this might be a case of weak hpfp

[Dj_Quik]

Originally Posted by Pray for Mojo

Your fuel blend is a bit lackluster unfortunately. It's not awful but you're probably losing a bit of power with the timing corrections. They opened a Chevron here recently and the 94 had my car running pretty poorly, I switched back to Husky 94 and it was better. I would recommend running 1/4-1/3 can of Boostane pro with Petro Ultra 94 or another E10 fuel, the big selling point for the Chevron is no ethanol, but I think that's actually bad for our tuned cars.

Boostane doesnt turn things orange tho does it?

In regards to the the ethanol, the e85 i put in there was about a month old. Could it have degraded and not perform as fresh ethabol wouldve?

[F87source]

Originally Posted by Pray for Mojo

Your fuel blend is a bit lackluster unfortunately. It's not awful but you're probably losing a bit of power with the timing corrections. They opened a Chevron here recently and the 94 had my car running pretty poorly, I switched back to Husky 94 and it was better. I would recommend running 1/4-1/3 can of Boostane pro with Petro Ultra 94 or another E10 fuel, the big selling point for the Chevron is no ethanol, but I think that's actually bad for our tuned cars.

Husky 94 imo is the best and only real 94 octane in canada, chevron is like 91 octane and petro is not consistant with their winter additives. You can ask any tuner that has had experience with Husky and they will likely confirm it.

[Dj_Quik]

Originally Posted by F87source

Husky 94 imo is the best and only real 94 octane in canada, chevron is like 91 octane and petro is not consistant with their winter additives. You can ask any tuner that has had experience with Husky and they will likely confirm it.

I know this because inactually lived in alberta for many years where i was using husky. But ive since moved to vancouver and the “best” they have out here is chev 94 so ive been blending that with e85. So from your responses it is likely a fuel issue? And not heat?

[detroitm2]

Originally Posted by F87source

No you can use it for flex fuel as well so a double duty kind of thing, and you can also tag on water meth control too.

Plus it doesn't utilize the ugly and cluttered obd2 cable that goes into the cabin that the zeritronix unit has to use, if I recall correctly.

The Zeitronix doesn't use an OBDII, it's direct to canbus.

(though it does need to be in the cabin)

[detroitm2]

Originally Posted by Dj_Quik

Boostane doesnt turn things orange tho does it?

In regards to the the ethanol, the e85 i put in there was about a month old. Could it have degraded and not perform as fresh ethabol wouldve?

Boostane will leave an orange residue, just not as bad as some of the other octane boosters.