Thread: i need advises my car its loosing power

yesterday i went to the track and i nottice that my car losses power from 5500rpms to the red line

i ran 4 times and all the times were the same, the car feels so strong until the tach reachs the 5500rpms, when that the car stops pusshing ç
the bost remains on 10psi and the air fuel gauge shows a rich mixture.

i wonder if could be a timing issue? its the only thing that comes to my head, because there´s no boost leak, the 10psi stays there until the red line, or maybe i´m maxing out my maf?

how rich its over 5500 rpm? its a air fuel gauge or a wideband?

it an air fuel gauge autometer like this

and all the rich part gets iluminated

You HAVE A lot of thing to cheak like plugs A/F maf... etc.
Get a wideband.

Time for a compression test, since you have no wideband there's some risk of lean A/F's

You'll need at least 230whp to max out your MAF since you're running blowtrough, drop the boost to 7psi and test it

i´ll start adjusting the timing at 15degree and drop a couple of psi, my plugs are ngk bkr7 and the gap is 0.32,

i´m runing a jwt ecu, its probably that i´m getting lean even with this ecu? the person who sold to me told me that he was runing a t25 at 12psi, 370cc and s4 cams, with this ecu on stock maf.

so you went by what somebody else told you?? i thought you bought the ecu directly from jwt. . . . thought the gap on spark plugs were lower on a turbo set up like .22-.25 or something like that.

wich are the sintoms of a low compression?? my car doesnt throw noting of smoke.

the cause of why i was loosing power after the 5500rpms was the timing, it was set on 10degree because when the mechanic adjusted he never put the car in adjuste mode, so he used the procedure like if the car was a carburated one.

a niegborgh borrowed me a timing pistol and yestarday i didit by my self how it shuld be done, and let the timing like this image


the car feels very diferent, this morning when i was on my way to the work i wanted to check if i have did´t right, so when i was in 2nd gear at 3000rpms i press the gas and the car jumps felling the power until 6000rpms there i depress the pedal. so i´m happy because it seems that the problem has gone, now i need to probe it at the track