Running insanely rich runs like crap wont idle

[nate_boosted]

A few weeks ago i put in a new walbro 190 pump and when i took the old one out i noticed it was a walbro gss432 which i guess is the 255 hp. So a previous owner must have put that in but i thout u needed a afpr to run a 255 so i didnt know why they had that in there and i thought it was a little overkill. I hooked it all back up started it up and ran fine. I also rewired it with 10 gauge wire. It was running normal no problems. Then the past week or so i noticed it seemed to have a little less power than normal but its always had a boost creep problem and i thought it was just because it wasnt tuned and ive been trying to save up money to get ecmlink, innovate lc-1 wideband and a laptop so i can just run at like 19 psi that its creeping at. The other day i started it up and it was idleing a little rough but it still ran ok and then last night i was driving around with some friends and i pushed in the clutch and it just stalled but thats happened many times so i didnt think anything was wrong but when i started it it was idling really bad and i had to get pressing the gas and lots of smoke coming out the back. I looked under the hood and couldnt see any wrong and oil was fine so i just tried to drive it home and it wouldnt go over 2000 rpms and i could watch my gas gauge dropping and it went from a little less than full to 3/4 in a 10 minute drive. I never saw the cel come on. Any ideas?

 

[joegamma1]

Some cars get away with using a Walbro 255 without an afpr, sometimes the factory fpr will handle it, but not the 255hp.
I would say do a boost leak test.
hope this helps.

 

[nate_boosted]

I just did a boost leak test not too long ago and i found a few leaks and fixed them except my biss idle screw was leaking a little bit and i was just gunna try to put something over it. When i did the test though, i could here it leaking through by the throttle body but it was leaking outside. I tried getting on tdc but it didnt make a difference. I will do another test tomorrow and see if i have any major leaks. So i shouldnt use the walbro 255 hp without an afpr for sure?

 

[Gasolinebaptism]

For sure on that last, it's a ticking time bomb, and it's sounds like it went off. but it shouldn'thurt anything. just popin an AFPR, and you're good.
But the BISS, along with any other leak may be the straw that broke the camels back.

 

[nate_boosted]

I found the problem, part of my ic piping came completly off. I ended up taking the whole ic out and cleaning it. Put everything back on and it runs good now and it didnt seem like i my boost was creeping as much as before but im not completely sure ### i didnt get on it too hard. I am just going to keep the Walbro 190 in. I dont think i need anything more than that for now.

 

[crazyquik22023]

I found the problem, part of my ic piping came completly off. I ended up taking the whole ic out and cleaning it. Put everything back on and it runs good now and it didnt seem like i my boost was creeping as much as before but im not completely sure ### i didnt get on it too hard. I am just going to keep the Walbro 190 in. I dont think i need anything more than that for now.

ya i was going to say i bet 1 of your IC pipes fell off but if u are running rich or not i would still get an FPR whether u run a 255 or 190 pump... Its worth it.
If price is a problem u can get something cheap like this Mitsubishi Eclipse Fuel Pressure Regulators - B&M Racing Mitsubishi Eclipse Fuel Pressure Regulators -
If not get something like this EXTREME PSI : Your #1 Source for In Stock Performance Parts - FueLab "515" Complete Fuel Pressure Regulator Kit w/ Gauge: Mitsubishi Eclipse 90-99
either way it will be an improvement over stock

 

[nate_boosted]

ya i was going to say i bet 1 of your IC pipes fell off but if u are running rich or not i would still get an FPR whether u run a 255 or 190 pump... Its worth it.
If price is a problem u can get something cheap like this Mitsubishi Eclipse Fuel Pressure Regulators - B&M Racing Mitsubishi Eclipse Fuel Pressure Regulators -
If not get something like this EXTREME PSI : Your #1 Source for In Stock Performance Parts - FueLab "515" Complete Fuel Pressure Regulator Kit w/ Gauge: Mitsubishi Eclipse 90-99
either way it will be an improvement over stock

Thanks for the links and advice. I never really looked into afpr's i was wondering how much they were. I might look at getting that b&m one. I could handle $44

 

[PatricksDSM]

Sorry, dont want to sound like an idiot, but what is a FPR? Thanks

 

[nate_boosted]

Sorry, dont want to sound like an idiot, but what is a FPR? Thanks

fuel pressure regulater. I good way to find something out without sounding like an idiot is by searching

 

[steve]

Thanks for the links and advice. I never really looked into afpr's i was wondering how much they were. I might look at getting that b&m one. I could handle $44

The B&M Command Flo and it's eBay clones don't solve the most common DSM problem which is regulator overrun from a upgraded fuel pump.

http://www.dsmtuners.com/forums/fre...ommand-flo-fuel-modifier-other-afpr-faqs.html