KLZE performing bad at high RPMs
KLZE performing bad at high RPMs
Have som problems with my MX3 -92, KLZE.
Have bad MPG, when I changed plugs last time they were really black, so im assuming it's running rich. Also have problems at high RPMs, loses power and it always struggles above 6k (sometimes it dont get past 6.5RPM). Also think it's kind of slow in general.
Currently running KL36/JE50.
I've tried K8/JE50 = bouncing idle, bad low end power, jerking (runs fine only when accelerating), still bad above 6k
Probinator chipped K8/JE50/KL02 - strangely it runs crap with this ECU, bouncing idle and black smoke from exhaust
Kind of funny that i've got a steady idle with KL36 but not with the other two..?
I've changed:
Plugs, wires, fuel pump, fuel filter, new CAI, ECTS sensor, distributor with HEI, changed and adjusted TPS, timing is spot on, no cat.
So the main problem is around 5,5 to 7K RPM, where its performing really bad, i assume because of it running really rich.
Need some input of you guys since im beginning to loose faith.
Have bad MPG, when I changed plugs last time they were really black, so im assuming it's running rich. Also have problems at high RPMs, loses power and it always struggles above 6k (sometimes it dont get past 6.5RPM). Also think it's kind of slow in general.
Currently running KL36/JE50.
I've tried K8/JE50 = bouncing idle, bad low end power, jerking (runs fine only when accelerating), still bad above 6k
Probinator chipped K8/JE50/KL02 - strangely it runs crap with this ECU, bouncing idle and black smoke from exhaust
Kind of funny that i've got a steady idle with KL36 but not with the other two..?
I've changed:
Plugs, wires, fuel pump, fuel filter, new CAI, ECTS sensor, distributor with HEI, changed and adjusted TPS, timing is spot on, no cat.
So the main problem is around 5,5 to 7K RPM, where its performing really bad, i assume because of it running really rich.
Need some input of you guys since im beginning to loose faith.
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Re: KLZE performing bad at high RPMs
well your description of running badly at higher rpm leads me to think it's an ignition issue. Good spark at low rpm but not at higher rpm. Either that or the timing is not advancing. That could also account for some of the poor fuel economy.
Have you checked codes?
Have you checked codes?
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2007 Mazda3 GT Sport --- super fun
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Re: KLZE performing bad at high RPMs
Yes, I forgot to mention that. No codes, except for 3 EGR related (when reading with K8). Since it's a ZE it has no EGR though.
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Re: KLZE performing bad at high RPMs
Are your VRIS working properly?
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Re: KLZE performing bad at high RPMs
VRIS valves opening? you can check this while its parked. Just rev it and watch the two valves on the back of the intake manifold to see if they open the butterfly valves. one should open then both should open at the same time depending on RPM. You shouldn't have to rev it past 4k though to have both open.
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Re: KLZE performing bad at high RPMs
How are you running the vacuum to your fuel pressure regulator and which intake manifold are you using?
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Re: KLZE performing bad at high RPMs
Did you diconnect the negative from the battery and depress the brake pedal for 15 secs to clear the ECU memory in between trying different ECU VAF combinations?
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I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
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I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.
Re: KLZE performing bad at high RPMs
VRIS is working fine. I have tested different ECUs and reset each one of them. Intake manifold is Curved Neck from Eunos 800. Vacuum goes from intake to FPR.
When i got time i will check cam timing to confirm that its not 1 tooth off. Does anyone know if you could destroy a FPR with the higher flowing Walbro 255 HP? I had that installed for two months, but now using stock ebay pump.
When i got time i will check cam timing to confirm that its not 1 tooth off. Does anyone know if you could destroy a FPR with the higher flowing Walbro 255 HP? I had that installed for two months, but now using stock ebay pump.
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Re: KLZE performing bad at high RPMs
My money's still on the ignition system.
94' RS/GS/MS/CF Monster Turbo...coming soon.
93' GS SE, the Black Beast, the former love of my life...soon to be gutted and crushed.
94' GS, black on black, now in several small pieces...and one large crushed piece.
2007 Mazda3 GT Sport --- super fun
2004 Honda RC51 --- Lost forever to some theavin' bastard
My Worklog
My feedback thread
Never attribute to malice that which can be adequately explained by stupidity.
93' GS SE, the Black Beast, the former love of my life...soon to be gutted and crushed.
94' GS, black on black, now in several small pieces...and one large crushed piece.
2007 Mazda3 GT Sport --- super fun
2004 Honda RC51 --- Lost forever to some theavin' bastard
My Worklog
My feedback thread
Never attribute to malice that which can be adequately explained by stupidity.
Re: KLZE performing bad at high RPMs
Good news!
It seems to be working fine now! I changed the HEI-module and redid all the wiring. It performs well all the way to the redline now. At least it did on my quickdrive. Snow and summer tires isnt such a great combo.
It seems to be working fine now! I changed the HEI-module and redid all the wiring. It performs well all the way to the redline now. At least it did on my quickdrive. Snow and summer tires isnt such a great combo.
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Re: KLZE performing bad at high RPMs
I'm not sayin'. I'm just sayin'.
94' RS/GS/MS/CF Monster Turbo...coming soon.
93' GS SE, the Black Beast, the former love of my life...soon to be gutted and crushed.
94' GS, black on black, now in several small pieces...and one large crushed piece.
2007 Mazda3 GT Sport --- super fun
2004 Honda RC51 --- Lost forever to some theavin' bastard
My Worklog
My feedback thread
Never attribute to malice that which can be adequately explained by stupidity.
93' GS SE, the Black Beast, the former love of my life...soon to be gutted and crushed.
94' GS, black on black, now in several small pieces...and one large crushed piece.
2007 Mazda3 GT Sport --- super fun
2004 Honda RC51 --- Lost forever to some theavin' bastard
My Worklog
My feedback thread
Never attribute to malice that which can be adequately explained by stupidity.