R/TErnie

iTrader: (32)

I recently fixed a leak in my stock 9 diverter valve and began to retune the car (FP Red w/1000 cc injectors)

I did my pump gas map first and my AFR's were way lean. 12.7-13:1.... so I richened it up...more...and more....and more. To now where I'm maxed out as far as the EcuFlash is concerned (7.4) value on the fuel table.

Only thing that I can think is that my fuel pump is taking a dump on me. Has anyone experienced this before?

JohnBradley

iTrader: (30)

Where is your injector scaling at right now?

R/TErnie

iTrader: (32)

Scaled at 914....

R/TErnie

iTrader: (32)

Here's the 1st and 2nd data log from this tune. I should be able to get excessively rich afr's with these injectors at this boost level.... yet somehow I'm at 11.6:1 AFR's

JohnBradley

iTrader: (30)

Drop scaling to high 700s low 8s and then decrease latency to compensate for the rich idle and cruise. Then adjust fuel map back into a usable tuning range (like the 10s or something)

R/TErnie

iTrader: (32)

Thanks Aaron.

fostytou

iTrader: (15)

Yeah, get your scaling and latency correct first. The reason it is "minning" (maxing) at 7.4 is because it is just an equational representation of 0-255

jid2

iTrader: (62)

Yeap drop the scaling. I had the same issue when getting my 1450's going. I actually had a scaling and latencies that created good fuel trims - but I couldn't get my fueling correct in the maps. Everhting was too lean with the values at min.

So I went back and dropped the scaling for the injectors. I then fixed my idle trims with MAF scaling and used latencies for cruise trims.

BUT, if everything was working correctly on these injectors and then changed it could be the pump. Have you had everything scaled and tuned and working on these injectors yet?