Re: Running totally lean after 5500rpm
 

if your tuner can't tell that the injectors need a resistor box, you need a better tuner.

Re: Running totally lean after 5500rpm
 

What are you tuning it on?

Re: Running totally lean after 5500rpm
 

I'd say just put a screw driver to them and listen if their still clicking the injectors are probably fine..Check the drivers in the ecu and see if they look overheated. or the board around them looks all melted.
Usaully when I run into problems like your saying missfires at idle and you can't lean it out to a 15.1 or more without missfires it's usaully Ignition related. Check the plugs wires. And check to se if it's in base time. just my $0.02

Re: Running totally lean after 5500rpm
 

It is a stock ecu + map ecu. I have heard, and please correct me if I am wrong, Toyota has really good timing tables on the factory ecu with the 1jz and 2jz motors. There are a couple of guys around here making 450+ on stock timing map with just a Map ecu and bigger injectors. I have even read a couple of reports of 600 With just injectors and a map ecu.

No, you miss understood me. I am the tuner. The car was brought to me in this manner. I was the one that ohmed out the injectors and noticed they were peak and hold. The owner of the car was accidentally sent (or bought) the wrong injectors. I noticed no resistor box and put some inline just to get me by to diagnose.

II have tried it with 2 other ecu's. The car is coil on plug, I have tried a known set of working coils. But it still wants to break up. Maybe the Ignitor? I have BKR7E plugs gapped to .026.

Re: Running totally lean after 5500rpm
 

I can't help with specifics. The only MAP-ECU II equipped vehicles I've dealt with were either wrecked before i could tune them, or were on a B-series Honda (wtf??) and I cut it out and threw it across the guy's yard. Zero experience, although I have the software installed on one of my laptops, might have looked at it for 5 minutes.

A local guy made 450 whp on a "heartbreaker" Mustang dyno with a stock 7M and MAP-ECU II, stock down to the factory headgasket. Keep in mind this is the Mustang dyno that said Goforth's CRX made 411, then he went to Pinks and netted consecutive 10.5-10.6 @ 146-148, so that 7M was pounding out an easy 525 in Dynojetland. Sure seems like they work very well, at least in some (Toyota) cases.

Re: Running totally lean after 5500rpm
 

Good, Thats what I thought. Have you ever looked at what you can get a whole 1jz swap for, They are cheap compared to the potential horsepower of a stock motor. You can get a whole swap for around $1500-2000. And their trannys are supposed to be good until somewhere around the 750hp mark.

Re: Running totally lean after 5500rpm
 

I'd rather have a 1/2UZFE.

Re: Running totally lean after 5500rpm
 

Dustin did 450whp with the map ecu 1, no timing control at all, running rich as ---- on the top, and not spooling till 4500.