Misfire/cuts on boost
17 July 2010, 08:42 PM
#1
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Misfire/cuts on boost
Hi to all,
First, I am sorry for my bad english.
I have a problem in my V4 Type R with EJ257 block, under full load (WOT) the car is too rich and have misfires/cuts, AFR is too rich after 3200-3400 rpm, plugs changed, maf changer, ISCV cleaned, boost is not high, max 0.9bar, have a log with the AFR (Innovate LM1).
3000 RPM
3425 RPM
3925 RPM
What can cause enrichment?, boost leak?, bad FPR?, bad map read?
First, I am sorry for my bad english.
I have a problem in my V4 Type R with EJ257 block, under full load (WOT) the car is too rich and have misfires/cuts, AFR is too rich after 3200-3400 rpm, plugs changed, maf changer, ISCV cleaned, boost is not high, max 0.9bar, have a log with the AFR (Innovate LM1).
3000 RPM
3425 RPM
3925 RPM
What can cause enrichment?, boost leak?, bad FPR?, bad map read?
17 July 2010, 11:09 PM
#4
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possiblhy det then.. the 2.5 will not like the timing advance in the sti v4 map at all.
unless you used very thick head gaskets to lower the compression.
It needs a mappable ecu and a map for the engine change.
Simon
unless you used very thick head gaskets to lower the compression.
It needs a mappable ecu and a map for the engine change.
Simon
17 July 2010, 11:22 PM
#5
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The engine is running from two years ago, they works ok (thick head gaskets and modified combustion chamber) but the last june broke a ringland in one piston, after replace the piston the car don't work ok, compression test is ok.
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