View Full Version : Evo X upgrades
scheides
05-28-2011, 01:59 PM
Hrm you're starting to make me wonder if I shouldn't try this on my car. I have no idea what fuel pressure is though...if it is super high that would make sense why my fuel system is dropping off up top.
mlomker
05-28-2011, 02:32 PM
Definitely recommend a fuel pressure gauge--so useful and a simple inline one is like $30. If your pressure is always too high then you will burn up the pump. There are guys that have gone through 3-4 Walbros before this issue was solved.
You would not believe how small the hole is in the return for the suction line. Holy shit! It is literally a pinhole. How the hell even the stock return fuel got through that is beyond me. Here it is AFTER I drilled it out to 5/64ths.
http://i959.photobucket.com/albums/ae80/mlomker/2011%20May/pinhole.jpg
What the part looks like. You need to give it a really good tug to get it out of the hanger.
http://i959.photobucket.com/albums/ae80/mlomker/2011%20May/return.jpg
mlomker
05-28-2011, 07:17 PM
Okay...I spent the last few hours going up one drill bit size at a time and the results were pretty predictable.
5/64ths: ~2psi
Port filter holder: ~2psi
Remove filter: ~1psi
3/32nds: ~2psi
7/64ths: ~2psi
1/8th: ~2psi
I'm now at the proper pressure at idle. I'm not going to worry about the filter since I have an inline under the hood. 1/8ths happens to be diameter of the top side of the tube so the solution was to just drill it out.
I'll have to see if the suction is still working but seeing how I went one bit a time, I think it will.
mlomker
05-30-2011, 08:35 PM
Installed the Weldon 2015 and controller today. That thing is so badass...
http://i959.photobucket.com/albums/ae80/mlomker/2011%20May/weldon2015-1.jpg
93gtpeater
05-30-2011, 08:43 PM
Car up and running now? Dumb question is that a wash bottle in the trunk? if so is that where they are from the factory?
Kracka
05-30-2011, 08:49 PM
Yup, washer fluid and the battery are in the trunk from the factory. Normally they're hidden with plastic paneling, but this trunk is stripped.
mlomker
05-30-2011, 09:09 PM
Had the car running Friday morning...took me a few days to figure out my issues with the switch back to a stock in-tank setup. Today I installed the Weldon and it appears happy.
It'll obviously need a re-tune after all of this. Next thing is to get on Shane's schedule...
Murlo26
05-30-2011, 11:03 PM
Looking good! Are you hoping to get tuned before MAP's event?
scheides
05-30-2011, 11:15 PM
It'll obviously need a re-tune after all of this. Next thing is to get on Shane's schedule...
Just use your standalone logging setup to log fuel trims for now and if shane can't fit you in maybe I could trade you some street tuning time (should be pretty basic, you have a wideband right?) in exchange for letting me try out that aeromotive/jay's 255 drop-in? :) Should be pretty simple as it'd just be dialing in AFRs.
mlomker
05-30-2011, 11:28 PM
Looking good! Are you hoping to get tuned before MAP's event?
If his schedule permits otherwise I'll ask scheides for some help! I basically just need to make sure that the fueling is conservative with the new setup.
Just use your standalone logging setup to log fuel trims for now and if shane can't fit you in maybe I could trade you some street tuning time
Not sure how accurate the PLX gauge is since I have more oil blow-by than most folks. I would love to wire that gauge into my ECU sometime this Summer, if you have the time to give me a hand.
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