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Old 09-10-2012, 09:35 PM   #6251
amalgrover
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some people do not have issues, but alot of people do...


my first e85 motor had zero issues with the stock heat range iridiums, but my second motor misfired like crazy until i switched to stock heat range coppers.
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Old 09-10-2012, 09:37 PM   #6252
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I think i just need to go back to stock heat range anything...


And Amal, sorry i missed your question earlier....i'm gonna leave the fuel system the way it is for now. Just enjoy having the car back after almost three years.
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Old 09-10-2012, 09:43 PM   #6253
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its all good...i definitely feel ya on that one. 3yrs is a long time to go without your toy, and i was the same way when that happened with mine.
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Old 09-10-2012, 10:03 PM   #6254
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Whats up army, i got a cel today while accelerating in 5th gear ( 2010 wrx) p0108 map high input. Has anyone dealt with this?

Headers, dp, walbro255, dw 1000's, tmic.
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Old 09-10-2012, 10:07 PM   #6255
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the only time i have come across this issue was when there was an intake leak near the map sensor...thats just the extent of my personal experience with that CEL.
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Old 09-10-2012, 10:24 PM   #6256
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you have to increase the MAP sensor CEL voltage. subaru lowered it from from 4.92volts in 2007 to 4.6 volts on teh 08+ wrx's.

or if you did air pump deletes there is a connector that needs to stay connected for the atm pressure sensor, i believe if its unplugged it can cause that same cel.
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Old 09-10-2012, 11:23 PM   #6257
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Quote:
Originally Posted by Phatron
you have to increase the MAP sensor CEL voltage. subaru lowered it from from 4.92volts in 2007 to 4.6 volts on teh 08+ wrx's.

or if you did air pump deletes there is a connector that needs to stay connected for the atm pressure sensor, i believe if its unplugged it can cause that same cel.
Thanks Ron, no air pump deletes. Can Mikey fix the voltage issue or its a mechanical fix? Would a 3 bar Map also work? ( omori)
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Old 09-11-2012, 12:02 AM   #6258
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Quote:
Originally Posted by Phatron
you have to increase the MAP sensor CEL voltage. subaru lowered it from from 4.92volts in 2007 to 4.6 volts on teh 08+ wrx's.

or if you did air pump deletes there is a connector that needs to stay connected for the atm pressure sensor, i believe if its unplugged it can cause that same cel.
Is it worth the hassle to do " air pump deletes "? I have the plates just haven't actually installed em lol!
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Old 09-11-2012, 12:16 AM   #6259
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Ill up the threshold but we shouldnt be anywhere near it. Only running 21psi. Rob, let me know if you need the new map or if you turned the boost down.

-Mikey
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Old 09-11-2012, 12:33 AM   #6260
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Quote:
Originally Posted by STi Mikey
Ill up the threshold but we shouldnt be anywhere near it. Only running 21psi. Rob, let me know if you need the new map or if you turned the boost down.

-Mikey
Thanks Mikey
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Old 09-11-2012, 12:41 AM   #6261
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It's not an overboost cel, it's a high MAP volt cel. It seems to be tempermental too. Most cars don't even pop it with the stock voltage setting. But a few do and I really haven't figured out why. But based on the old voltage trip point and the new lower trip point it seems like Subaru lowered it and started using it as a secondary or backup overboost cel. So since the voltage is lower it seems to trip on some cars ~18-19 psi.
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Old 09-11-2012, 09:06 AM   #6262
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Stock shortblock, 21 psi, e85

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Old 09-11-2012, 10:05 AM   #6263
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Quote:
Originally Posted by Innovative Tuning
Stock shortblock, 21 psi, e85
I've been at this power level for a full season now still holding strong!

The stock block can really hold up well on E85!
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Old 09-11-2012, 10:21 AM   #6264
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My stock block lasted a few months with a 20G XTR, E85 and about 22psi. It was around 400WHP on a Mustang dyno. I think I got nearly 6k miles out of it between installing the new turbo and cracking a piston.
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Old 09-11-2012, 10:23 AM   #6265
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That was on a 2.5 right? I wonder how a 2.0 would compare.
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Old 09-11-2012, 12:34 PM   #6266
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Quote:
Originally Posted by xluben
My stock block lasted a few months with a 20G XTR, E85 and about 22psi. It was around 400WHP on a Mustang dyno. I think I got nearly 6k miles out of it between installing the new turbo and cracking a piston.
I'm on a DOM3 xtr @ 26 psi.
I've gone one season at 450whp (23-24psi)
And am now on one season at 520whp.

Stock EJ257 holding so far!
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Old 09-11-2012, 02:38 PM   #6267
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Quote:
Originally Posted by xluben
My stock block lasted a few months with a 20G XTR, E85 and about 22psi. It was around 400WHP on a Mustang dyno. I think I got nearly 6k miles out of it between installing the new turbo and cracking a piston.
What were your driving habits most time?
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Old 09-11-2012, 02:52 PM   #6268
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Quote:
Originally Posted by Phatron View Post
It's not an overboost cel, it's a high MAP volt cel. It seems to be tempermental too. Most cars don't even pop it with the stock voltage setting. But a few do and I really haven't figured out why. But based on the old voltage trip point and the new lower trip point it seems like Subaru lowered it and started using it as a secondary or backup overboost cel. So since the voltage is lower it seems to trip on some cars ~18-19 psi.
So, I'm not sure if you answered this Ron, is the voltage a mechanical fix like increasing the voltage on the FP or is it a data table fix? Also the second part is would a 3bar MAP sensor help?
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Old 09-11-2012, 02:56 PM   #6269
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yes i answered it. its a table fix. increasing the MAP high voltage CEL trip point
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Old 09-11-2012, 03:00 PM   #6270
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Quote:
Originally Posted by Phatron View Post
yes i answered it. its a table fix. increasing the MAP high voltage CEL trip point
Sorry missed that. Ok so It's not too bad. Would that CEL cause any other drivability issues that you are aware of?
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Old 09-11-2012, 03:21 PM   #6271
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Quote:
Originally Posted by draco159 View Post
That was on a 2.5 right? I wonder how a 2.0 would compare.
2.5's crack pistons very easily.

Quote:
Originally Posted by jnorth85 View Post
I'm on a DOM3 xtr @ 26 psi.
I've gone one season at 450whp (23-24psi)
And am now on one season at 520whp.

Stock EJ257 holding so far!
What does "one season" mean? Track car? Minimal miles? Or is it a daily driver?

Quote:
Originally Posted by 07wrx84 View Post
What were your driving habits most time?
Daily driven. WOT pulls through the gears once a day or so (varied). Didn't overly beat on it, but I used the power on a regular basis. No track days at all.
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Old 09-11-2012, 03:56 PM   #6272
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Quote:
Originally Posted by xluben
2.5's crack pistons very easily.

What does "one season" mean? Track car? Minimal miles? Or is it a daily driver?

Daily driven. WOT pulls through the gears once a day or so (varied). Didn't overly beat on it, but I used the power on a regular basis. No track days at all.
Track days, drag events, and a few shows.
in other words when I drive it. I drive it very hard.

It just lasted 7 20:00 sessions in 90+ heat at 26 psi
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Old 09-12-2012, 06:12 PM   #6273
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So stock heat range is the way to go for E85 huh. Guess I should switch them out, since I have been running one step colder and the starts are really rough, but I have no other driving issues or knock.

No tuning changes are necessary correct?
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Old 09-12-2012, 06:16 PM   #6274
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i'm a big believer in stock heat range for 90% of the setups on here no matter what fuel it is...

and no, no tune changes are needed for the swap back to stock heat range spark plugs.

Last edited by amalgrover; 09-12-2012 at 06:27 PM.
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Old 09-12-2012, 06:58 PM   #6275
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Quote:
Originally Posted by jnorth85 View Post
Track days, drag events, and a few shows.
in other words when I drive it. I drive it very hard.

It just lasted 7 20:00 sessions in 90+ heat at 26 psi

ffs + lc, stock pistons dont like as much lol
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