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09-04-2007, 02:20 AM
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#1 |
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Stock
Join Date: May 2006
Location: grande prairie
Posts: 22
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lex 550s boggin out near 3000 rpms?
got the lex and 550s and ive been playin with ignition timing a bit and fuel pressure but no matter what i do it seems to bog out around 3000 rpms sometimes a bit sooner its alright at idel when i rev it sumtimes makes a noise but not much its in all gears and my air fuel gauge flicks to lean when it happens
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1987 turbo full 3" exhaust, k&n fipk, manual boost controller, walbro 255lph fuel pump, aeromotive afpr, 550cc injectors, lexus afm, fal dual electric fans, fluidyne rad, 3 angle vale job, adjustable cam gears |
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09-04-2007, 04:51 AM
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#2 |
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3" Exhaust
Join Date: Oct 2006
Location: Brentwood, New York
Posts: 162
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did you do an upgraded fuel pump? How much boost are you running?
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'91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent) |
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09-04-2007, 02:59 PM
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#3 |
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Stock
Join Date: May 2006
Location: grande prairie
Posts: 22
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yes i ave a walbro fuel pump and aeromotive adjustable fuel pressure regulator and before i installed these new parts i was running 11 pounds but now i havent been able to get past 8 it starts boggin out
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1987 turbo full 3" exhaust, k&n fipk, manual boost controller, walbro 255lph fuel pump, aeromotive afpr, 550cc injectors, lexus afm, fal dual electric fans, fluidyne rad, 3 angle vale job, adjustable cam gears |
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09-04-2007, 05:11 PM
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#4 |
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3" Exhaust
Join Date: Oct 2006
Location: Brentwood, New York
Posts: 162
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How are you controlling your boost? Boost controller or shimmed wastegate? If you slowly accelerate will it run smoothly past 3000 rpms?
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'91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent) |
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09-04-2007, 06:23 PM
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#5 |
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Stock
Join Date: May 2006
Location: grande prairie
Posts: 22
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i hbave a greddy manual boost controller set at thbe minimum setting it seems like if i accelerate slowly i can go past 3000 ive only taken it to ahbout 3500 cause i didnt want to pushb it also i put in iridium spark plugs could thbat make a difference perhbaps whben i get boost it blows out thbe spark? i thbink factory is platinum tipped?
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1987 turbo full 3" exhaust, k&n fipk, manual boost controller, walbro 255lph fuel pump, aeromotive afpr, 550cc injectors, lexus afm, fal dual electric fans, fluidyne rad, 3 angle vale job, adjustable cam gears |
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09-04-2007, 08:37 PM
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#6 |
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1000whp postwhore
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
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Ya the stock plugs were NGK platinums.
I don't think the iridium tips are going to cause you to bog. The solution to that is a blaster coil. Have you checked your fuel pressure regulator? |
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