OK, so I retuned all the partial throttle fuel maps yesterday in uberdata and had a very consistent 14.7 AFR going. Now I turn my car on today and fully warm, it idles and drives in 11.2 all the way down to 10.9 at high load.

I tuned last night, so the temperature was a little cooler, but would that slight temperature change between last night and today be enough to make me run so pig rich?

I really need to finish this tuning today, so I can also tune my boost maps for 11.8 AFR since they are too lean at 12.5 AFR.

 

temp wouldnt make that much of a difference. make sure you set the duty cycle correctly on your injectors.

 

what ECU are you using

 

I am using an OBD1 P72. I didn't think that temperature would make that much of a difference.

It appears that uberdata is transferring the information wrong because with my extremely leaned out map is displaying the same fuel ratio at idle as my richened base map.

I will try and burn the chip on my desktop computer and see if everything is normal. If not, I will retune using Crome because this downtime is really killing me and I need something to work correctly.

 

get a system that allows you to realtime tune and datalog like hondata. you get what you pay for man. my friends all motor car has taken 6 monthes to get a decent street tune on chrome when my car took 3 hours to get it tuned part throttle and WOT with hondata

 

Yeah, but I already bought the ECU, chip, wideband and have become very familiar with the software. Switching to Hondata right now would cost me $600 more than where I am at.

I am beginning to think that my 1st and 3rd cylinder injectors are having some issues because of the flooding of fuel on the spark plug. It wasn't running like this before the tune, but now even when I plug the OBD2 ECU in, it shows a super rich condition throughout the powerband.

Or, it could be the wideband....because it still pulls pretty well during part throttle and boost, despite the super rich condition.

I am really stumped and pretty frustrated with this whole tuning experience, but the knowledge gained is very fascinating to me. I just want to get this working right since it seems that other variables have been added to the mix creating nothing but headaches for me.

 

to me 600 in ECU is better than 2000 in a new rebuild cause you washed your rings out and lost compression. If you are runnin RC injectors switch them. the pintals tend to stick and can cause extremely rich or lean conditions.

 

I've done my rings once, myself.

I am using RC 310's. I am figuring that they are bad since it is giving me the same AFR with the stock ECU and the uberdata chipped ECU.

I'll take a look at them, but I don't have any direct replacements, so I'll have to order a new set. What do you recommend?

 

precisions. they have awesome spray patterns and are much more reliable. also get something bigger than 310's and save time down the road

 

For sure, thanks for the advice!