boosting & running super lean?? Options

[RUNNIN-LOW]

ok just got done putting my 3rd gen map in, been running the 2nd gen map for a bit now...i do have a st205 motor and ecu...so yeah clearing that up now...on my 2nd gen map i can boost fine but i bogg out at like 5500rpm and it climbs up again and then boggs..i have put a third gen map in, off my buddys mr2..and my car ran fine..now that i have my own when try to boost..i dont boost and im running hella lean!!!damn it scared the living crap out of me.. here is the part number 8942020310-100798310050v..any clue of what could be the problem??

it is the right map sensor...but have no clue why i cant boost hard and run hella lean when i do..ooh yeah i did reset the ecu too..

This post has been edited by RUNNIN-LOW: Sep 22, 2008 - 2:47 PM

[Batman722]

first try reseting the a/f ratio.

I think the ECU will have to relearn the correct map sensor, give it a day or 2.

[lagos]

Pull the efi fuse or disconnect the battery for a few min to clear the ecu.

[RUNNIN-LOW]

alright ill try that i think that is the problem..batman the ecu has to relearn everything i guess..im just lost fu$k ,yeah thanks lagos im about to reset the ecu all night tonight....thanks guys ill let yah know tomorrow how it is..

ooh yeah i just afraid of blowing the motor i put too much money into this for it to blow...

This post has been edited by RUNNIN-LOW: Sep 22, 2008 - 4:18 PM

[Ronan]

It could be the fuel pump or fuel pressure regulator. My car is starved for fule from 5k upwards. Im fitting a 255ltr/h fuel pump and controlling the fuel with an Apexi neo to sort it out.

[RUNNIN-LOW]

i have a wablro 255 and a turbo xs fpr hooked up...fuel pressure is fine...i think its because the ecu doesnt know what its doing righ tnow..ill wait and see tomorrow after i drive it to work and back..ill have to test it then..

[Batman722]

and a turbo xs fpr hooked up...

eeek why in the name of Dustin do you have a turbo xs fpr on a 3rd gen swap ?

[RUNNIN-LOW]

using it for the time being..drove the car this morning..i guess the ecu does have to relearn how to work again..mr2 guys just told me to everytime i run the car to reset the ecu..cause since i had the 2nd gen map on there for so long..it caused the ecu to adjust to the 2nd gen map...

[99GT]

I thought you were running Karl's setup?

This post has been edited by 99GT: Sep 23, 2008 - 7:26 AM

[RUNNIN-LOW]

yeah we have to work little stuff out first..like the wiring for the third gen...then ill be good to go..had it in my car for like 1 day or so ran good but car didnt want to start most of the time..ok reset the ecu like 20mins ago....car runs lean but now when i do kinda push it man it pulls harder then i thought....i guess ecu is redoing everything all over again..ill let yah know after a day of driving today...

[bccentaur3]

I was about to say that the Honda chrome you had was tuned on your 2 bar map sensor instead of the 2.5 bar yu should be using. But since your ecu is relearning everything your golden.

[RUNNIN-LOW]

i wish my ecu would learn this crap faster havent notice anything..but car is down till next summer turbo up grade and everything else might end up putting money and motor into a mr2..well see

[lagos]

If you reset the ecu and you still have the problem, I would look at your fpr.

[RUNNIN-LOW]

alright just took the car out for another drive...man the thing pulls hard...re adjusted the fpr nothing is wrong with it..figure that the wideband was reading everything wrong..checked the downpipe and now i finally realise how much i hate ebay stuff...had a 2in crack on the downpipe..but yeah turbo upgrading so takin car apart today..thanks everyone for the help...

[Batman722]

so the big crack in the dp was causing the wideband to read lean and everything was just fine, correct ?

lesson for everyone: don't buy cheap ebay dp, it is junk.

[RUNNIN-LOW]

so the big crack in the dp was causing the wideband to read lean and everything was just fine, correct ?

lesson for everyone: don't buy cheap ebay dp, it is junk.

yep your correct!!!! now im starting all over just order berksracing custom t3/t4 downpipe..decided to go with the garrett t3/t4 turbo..tial external wastegate, speedsource ct26/t3 adapter plate, and using the all mighty HONDA CROME!!!haha as fuel management...decided to dump the turbo xs fpr and got the Aeromotive fpr now.. ill update when i get all the stuff in...ill try to post up cool pictures like you guys when i install haha...