Evo X upgrades - Page 77

**mlomker** · 10-09-2010

Quote:

Originally Posted by Murlo26

Well, does it seem like this worked yet or do you not know yet?

I haven't tested it yet. I'm not in a hurry since I don't have the funds for a retune anyway. I need to sell some stuff.

**mlomker** · 10-10-2010

Went out to test the fuel system this afternoon.

Swifty1638 · 10-10-2010

oh god. wtf. I can officially sympathize with you, and the ongoing bullshit that is this hobby

What are the new ideas on the drawing board?

Speedfreak · 10-10-2010

This fuel system journey is painful to watch. It could be one of the most expensive series of failures I've seen.

**mlomker** · 10-10-2010

A few possibilities here:

1) My Bosch 044 is a lemon.
2) A Bosch 044 on its own can barely do 400whp @DB.

I'm a bit disinclined to waste another $200 on an 044 if it isn't adequate.

Anyone heard anything bad about Magnafuel pumps? The 4301 is obviously overkill but it's $15 more than the 4302 so I don't see a point in it.

http://www.summitracing.com/parts/MRF-MP-4301/

**mlomker** · 10-10-2010

Quote:

Originally Posted by Speedfreak

This fuel system journey is painful to watch. It could be one of the most expensive series of failures I've seen.

The annoying thing is that I've had a lot of expert opinions along the way. I've kinda given up on them now. LJ gets a +1 for his surge tank probably not being the problem. It was a good idea to replace all those line with braided, E85-safe lines anyway. The new tank itself was 'only' another $200.

Speedfreak · 10-10-2010

The 044 is a tried and true pump. It supports an easy 600whp, and people have pushed 700+whp with a very efficient setup. I personally have supported 584whp on an nsx tuned by Shane(backed up in Chicago with 560whp on a stingy Mustang dyno in Chicago). If it's the pump, you have a lemon, otherwise it shouldn't be your issue.

Edit: I'd be willing to lend my brain to help you diagnose the issue if you want to stop by some time. I just can't watch this fuel system situation any longer.

**mlomker** · 10-10-2010

Quote:

Originally Posted by Speedfreak

The 044 is a tried and true pump. It supports an easy 600whp, and people have pushed 700+whp with a very efficient setup.

On E85 or pump? When used inline with the in-tank pump or on its own, replacing the pump in the tank?

That's where things get tricky. Inline pumps flow more since they have fuel pushed to them rather than having to waste energy sucking it. E85 also needs 30%+ more fuel.

I've done a lot of Internet searching this last week and opinions vary a great deal. The most solid data I've seen is a guy that did 730whp on pump with a 044 that replaced his in-tank. That's comparable to what I'm doing (except my fuel tank is a small surge tank).

730 * .70 = 511.

Shane's dyno is about 12-13% lower than a typical Dynojet.

511 * .88 = 450.

That's still less than I'm getting by a meaningful margin. The problem is that I don't want to get stuck with TWO 044's that are worthless to me. I wonder if anyone has an 044 that they could lend me for a couple days.

311evo · 10-10-2010

Quote:

Originally Posted by Speedfreak

The 044 is a tried and true pump. It supports an easy 600whp, and people have pushed 700+whp with a very efficient setup. I personally have supported 584whp on an nsx tuned by Shane(backed up in Chicago with 560whp on a stingy Mustang dyno in Chicago). If it's the pump, you have a lemon, otherwise it shouldn't be your issue.

This.

**mlomker** · 10-10-2010

Quote:

Originally Posted by 311evo

This.

The symptoms are:
1) Run Bosch off of car's relay and it works fine up to current power level, car will hit 68psi as you'd expect with 25psi boost and 43 base.
2) Run pump off of car battery (using a relay) and it'll max at 55-60psi.
3) Run pump on BAP on the car or battery and it maxes in the low 50's psi.

The car's relay runs it at 9volts or so in low load situations so I'm guessing that the hotter the pump gets (from voltage) the worse that it works.

I've pondered it being a boost issue with the vacuum line to the fpr, but it works in the #1 configuration so that would seem to rule it out.

Swifty1638 · 10-10-2010

and the FPR isn't torn/bad?

FattyBoomBatty · 10-10-2010

Buy some dynamite.

**mlomker** · 10-10-2010

Quote:

Originally Posted by Swifty1638

and the FPR isn't torn/bad?

I hope not. I put in an Aeromotive unit a few months ago as a part of troubleshooting this.

Swifty1638 · 10-10-2010

Well, I am saying, was it replaced while trying to fix other shit too? You might wanna swap it out, and see if that makes a difference. Sometimes, changing 6 things at once, then having an issue doesn't help, because you don't know the effect each of those 6 items had..I wasn't sure if the FPR was swapped out, while you swapped your injectors, or messed with the pump wiring, or something else..who knows.

turbotalon1g · 10-10-2010

This issue give me a headache, I'm sorry for you. But 044 is plenty of fuel for 400whp at DB, shit a single 255hp will do 400 on E85 I believe.

I can't imagine DB hasn't just said give us the car, give us sometime.

**mlomker** · 10-10-2010

Quote:

Originally Posted by FattyBoomBatty

Buy some dynamite.

Note to self: more insurance coverage.

**mlomker** · 10-10-2010

Quote:

Originally Posted by Swifty1638

I wasn't sure if the FPR was swapped out

I've been testing things one at a time, which is why I've been working on this for like 5 months now. The stock fpr had the same symptoms. The big afpr does allow me to run the 044 at battery voltage at idle, which the stocker would not.

Quote:

Originally Posted by turbotalon1g

But 044 is plenty of fuel for 400whp at DB, shit a single 255hp will do 400 on E85 I believe.

The car is already 400 @DB. I want the rest that is in it. Maybe 450. Who knows.

Quote:

I can't imagine DB hasn't just said give us the car, give us sometime.

Shane burned a lot of time troubleshooting the Full Blown hanger problems that I had prior to Full Blown installing the first surge tank. I'm not going to ask for a ton more charity and I can't afford to pay for it right now.

I'll have to keep plugging away at it, methodically, doing things to the best of my knowledge and with what money I've got. There's nothing else I can do.

turbotalon1g · 10-10-2010

I'd like to help you if possible, let me know I'm usually around since I don't have a job.

I'd say shove a 255 or 044 inline.

**Kracka** · 10-10-2010

Obviously not related to your fuel issue, but put a zip-tie on your BOV. I've seen quite a few vacuum lines blow off the BOV recently for whatever reason.

C3L1CA · 10-10-2010

The 044 should be more than enough to get over 450 @ DB on corn unless the evo x fuel system is a lot crazier than a dsm. I know all sorts of DSM that max out a high pressure 255 pump @ 450awhp on DB's dyno. I've made 520 with more fuel left with just 255 and a bap.

It kind of sounds like a wiring problem to me. I wish you luck, you deserve a fuel system that works after spending on that money.