Anyone out there running with a wideband o2 and stk injectors and ECU. That just about says it all. Just curious what you see when at full throttle all the way thru third gear and forth(up to a reasonable safe speed).

 

hmm... stock injectors and g-force ecu. 3" intake and exhuast with cat. was running like 10:1 at 10psi 5000rpm+ at wot LOL. leaned the SAFC out like -15%. now I'm seeing the same EGT's as before the gforce went in (they droped alot)

so what I am saying is... the egt's were about the same with stock ECU and FCD at 10psi then now with g-force, safc, and wide band tuned. meaning it was probably about right with the stock ecu and injectors at 10psi with FCD, and rewired FD pump.

right being around 12.7:1

 

Between 5 and 7 in third I'm seeing 10.2 to 10.5 consistently. Stock 550's and a fuel pump rewire. In forth I see the 10.5 and maybe 11.2. Sorry, not to 7000. Not enough safe road.

Just trying to get a base feeling for what stock turboii's look like. Right now I don't see a need for me to buy bigger injectors. I'm just gonna keep it around ten at most for boost. Right now anyway.

 

To the top until there are enough responses!

 

Bringing this one back from the dead! I just installed an AFR gauge on my car to diagnose some problems. The only mod is a gutted cat, it cruises on the intersate at 15:1-15:5 and when it goes into boost its around 12:8-13:5 and that is below 5000 rpms. I don't have any readings over 5000rpms.

 

Im not good with tuning, so made everything a little richer than normal to be safe. im not sure if they are good #'s , but Im running about 11.5:1 at WOT, 14.7 at cruising, and about 12.5:1 at about 75% throttle, and around 13:1.

Im having trouble having it run smooth when my secondaries kick in at 4K. the friend I got the car from had put 1600cc secondary injectors.

You guys got any tips or suggestions?

 

stock injectors, stock ecu(no tune), and 7-8lbs of boost with stock pump 12.5 afr. supra pump 11.3 afr

 

i put a wb on a stock 91 na, and heres what it did.

idle/low speed/low load: 18-20:1
cruise (its not in closed loop, o2 is disconnected) 13-14:1
wot: 4000rpms its mid 12's, and it gradually richens up by 6000 its about 11:1

 

Logged on to the molassas forum once more (humor, sorta)

The unusually high numbers at idle could be accounted for by you having the airpump/acv still on the car.

If you don't have a airpump and working acv and have those 18-20 numbers.....I'd think there's something amiss with the wideband. I mean a 18-20 afr would cause the engine to buck where you wouldn't want to drive it.

Remember, the airpump/acv supplys air to the exaust ports which are prior to the 02 sensor which obviously would cause the 02 to read lean. Leaner than the real afr. Disconnect the Blue plug on the relief solenoid and it'll read the real afr at idle.

 

which wideband 02 are you guys using and how much did it cost? Im looking for just a sensor by itself, cause i already have a gauge to monitor it. Thanks.

RoninRX7

 

Is that with a re-wire or not?

i just put a supra pump myself.. but it's on stock wiring...

 

no rewire, that pump is sick. i just hit some boost today since i reached 500 miles and afr's hit low 11's under boost. cruises pretty lean at 15-16:1