| I always wanted to do this but I didn't know anybody that would let try it until today. Thanks to Daniel! anyhow, this is not say that you can't use any other similar tool that will let adjust the injection pulse. it's just easier w/ nProbe. you can hide it if you have it. background: when you bring your car in, you normally don't have to shut off your engine so that's easy. if you do shut it off just tell them you want to log your test before they start.
it's best if you know somebody that would you do a trial (training) run. otherwise, you have to correct it after you fail the first time. here are the results: 15mph - test --------------------- 25mph - test
HC spec 152 - reading 121 ----- HC spec 148 - reading 123
CO-----0.86 ----------- 0.90* --- CO --- 0.94 -------- 0.90
Nox----1146 ----------- 1145 ---- Nox --1047 --------- 835 CO failed and Nox is close. so I figure I can fix this. I when to active test and decrease INJ by 5%. here are the results: 15mph test ----------------- 25mph test
HC spec 152 - reading 148 ----- HC spec 148 - reading 148
CO-----0.86 ----------- 0.10 ----- CO --- 0.94 -------- 0.20
Nox----1146 ----------- 527 ----- Nox -- 1047 --------- 253 note the HC went up, so 3% or 4% should do the trick. my car setup: no EGR, no pre CAT, no CAT. T28/25 turbos, 555cc inj, JUN ECU.
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