razorlab's simple build(s)
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
Its probably fuel tank pressure for EVAP system operation just like for the Evo 8/9. Here is what I built to measure pressure at the pump.
https://www.evolutionm.net/forums/ev...l#post10114095
I "logged" the pump pressure by making a video of the mechanical gauge while shouting the rpm.
Anyhow, now that I think about it, you'd probably be better off logging fuel rail pressure. That would be the easiest way to see if the pump is able to supply the necessary pressure at the rail where it counts. Probably the easiest way to do that would be to tee into that hose where the fuel filter is located. Put the tee after the fuel filter, and then tape the gauge to your window. The hose from the tee to the gauge can be very small diameter, so it should be possible to run it out from under the hood. You'd need a 100 psi gauge.
https://www.evolutionm.net/forums/ev...l#post10114095
I "logged" the pump pressure by making a video of the mechanical gauge while shouting the rpm.
Anyhow, now that I think about it, you'd probably be better off logging fuel rail pressure. That would be the easiest way to see if the pump is able to supply the necessary pressure at the rail where it counts. Probably the easiest way to do that would be to tee into that hose where the fuel filter is located. Put the tee after the fuel filter, and then tape the gauge to your window. The hose from the tee to the gauge can be very small diameter, so it should be possible to run it out from under the hood. You'd need a 100 psi gauge.
EDIT: Nevermind, I should have kept reading the thread.
Last edited by razorlab; Nov 30, 2013 at 01:05 PM.
Any idea on whats causing the high IDC yet? If I can recall My EF2 evo X Wally255 ID1000's were at 100% IDC around 410-415whp on GST's dyno. With that said something is weird.
-Gary
-Gary
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
Ok, was doing a little fine tuning today and my fuel system is at 93% IDC's now.
I have no idea wtf is going on. I really don't want to rip everything apart but I guess I'm going to have to.
I have no idea wtf is going on. I really don't want to rip everything apart but I guess I'm going to have to.
Some of the early E85 testers had issues with the sock and E85. Just a guess in this situation though. You checked the obvious relay issue I hope.... Fuel pump at a lower voltage will do that too. I'd shake your fuel pump relay before tearing anything apart.
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
I'm going to guess that you have debris which got past your sock filter or the sock filter itself has got "sucked in" slightly to the pickup.
Some of the early E85 testers had issues with the sock and E85. Just a guess in this situation though. You checked the obvious relay issue I hope.... Fuel pump at a lower voltage will do that too. I'd shake your fuel pump relay before tearing anything apart.
Some of the early E85 testers had issues with the sock and E85. Just a guess in this situation though. You checked the obvious relay issue I hope.... Fuel pump at a lower voltage will do that too. I'd shake your fuel pump relay before tearing anything apart.
I have to doubt debris as I converted the car to E85 at 950 miles, but I guess maybe their *could* be something in there.
Relays are upgraded to newer.
Fuel sock is E85 safe and looks fine.
Still trying to figure out what would be the culprit...
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
OK, I'm starting to see inconsistent AFR's at WOT now. Sometimes it hits 11.8, sometimes it's 12.6, today I saw a 13.2 before I let off, then it hit 12.0 the next WOT application... ugh...
Now I'm starting to think the pump is wacked....
Now I'm starting to think the pump is wacked....
Im having the same problem and also down in power... after the tune, I was 11.1-11.3 at wot then all of a sudden, I see 11.8-12.4. Im running dw65c and id1000inj. Im hoping my problem isnt the injectors..
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
Ok an update on this build.
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
Newbie
Joined: Oct 2011
Posts: 17
Likes: 0
From: New Jersey
Ok an update on this build.
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
EvoM Guru
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Joined: Mar 2006
Posts: 9,675
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From: Tri-Cities, WA // Portland, OR
Ok an update on this build.
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
I hate hate hate hate hate these springs. I'm not really sure why they get such great reviews. It's SOOOOO underdamped with the OEM struts, even with Bilsteins. It's horrible. Seriously I think most people that give these good reviews haven't actually had good suspension setups.
Honestly I think stock is better.
So, now to find something that doesn't suck and isn't a billion dollars.
My fueling issues I'm going to tackle after the holidays...I'm off to New Jersey for a week...
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,092
From: Mid-Hudson, NY
I can agree with that. This setup is so much worse then stock on the bumpy roads here in Northern California.
I'm currently looking at the H&R coilovers...
They don't sell the HD's for the 10 yet.
I'm currently looking at the H&R coilovers...
They don't sell the HD's for the 10 yet.
