Evo X upgrades - Page 93

**Kracka** · 05-27-2011

What's 30R10? I assume that must be ethanol-safe fuel hose?

*edit*
Found it: http://www.gates.com/brochure.cfm?br...ocation_id=541

**cmspaz** · 05-27-2011

Yeah, even the single foot I picked up for Scheides on my discount was $14.

**mlomker** · 05-27-2011

woot! Home where she belongs. I guess I lucked out on the days that it was out of service...I had nice weather to be outside working on it.

I don't mind having a nice BMW parking next to me now. Door ding odds are greatly diminished. I think that spot is a condo owned by Regions Hospital. Apparently not an intern this time.

FattyBoomBatty · 05-28-2011

It's a 3 series, so your chances of getting a door ding probably went up.

**mlomker** · 05-28-2011

Photos don't really do justice for how tiny the filter inside of the return is. It was obstructed with very fine particles...looks like rubber and metallic bits.

**scheides** · 05-28-2011

Ooh, so maybe just cleaning it out will do the trick eh? Or are you drilling it out too?

**mlomker** · 05-28-2011

Quote:

Originally Posted by scheides

Ooh, so maybe just cleaning it out will do the trick eh? Or are you drilling it out too?

I'll try it cleaned out first. I had a 255 in my stock hanger when I was STS so it really should work.

**mlomker** · 05-28-2011

Drill baby, drill.

Huge improvement but fuel pressure at the engine is elevated by 10psi and at the surge tank by 25psi.

I need to figure out how to remove the return assembly from the hanger. I don't see what's holding it in.

**mlomker** · 05-28-2011

Interesting and directly applicable to me. Would have been nicer if they simply told you how to fix it, eh?

http://www.youtube.com/watch?v=2BO8sl1_vrE&hd=1

**scheides** · 05-28-2011

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

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.

What the part looks like. You need to give it a really good tug to get it out of the hanger.

**mlomker** · 05-28-2011

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

Installed the Weldon 2015 and controller today. That thing is so badass...

93gtpeater · 05-30-2011

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

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

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...

**scheides** · 05-30-2011

Quote:

Originally Posted by mlomker

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

Quote:

Originally Posted by Murlo26

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.

Quote:

Originally Posted by scheides

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.

**Murlo26** · 05-30-2011

Looking good! Are you hoping to get tuned before MAP's event?

**mlomker** · 06-01-2011

Awesome! I'm on Shane's schedule.

I have a mild fear that the Weldon 2015 won't be big enough but that's only because the X is so bizarre about its pump needs. This pump is rated for 1000bhp so it should be good into the 500s@DB on E85.

I lowered the flow using the dial-a-flow controller before driving to work this morning. It looks like I was out-flowing the capacity of the 1/4" return line a little bit since fuel pressure dropped 2-3psi. It's sitting right at 43 now, which is a good spot for it. Just need the fueling adjusted to match.