1227165 ecu with custom code much better than stock ecu. (Page 14/26) FieroWannaBe MAY 05, 11:07 AM I've looked at the .bin in tuner pro, and see exactly what you talking about. The way I see it, running a wideband all the time is a necessity then? Can one get the tune correct, or where they are comfortable, and then remove the wideband, and run only a narrowband hence forth? chetw77cruiser MAY 05, 12:20 PM The wideband is not a necessity all the time. The wideband makes tuning much easier though. The beauty of this is that the narrow-band is enough to tune with and maintain good fuel ratios if tuned correctly. The ecu can even self tune using the NBO2 (narrow-band) and not just by the long-term learn table (BLM). So to answer your question, once you have the tune where you want it, the WBO2 can be removed and use the NBO2 for minor corrections. Just make sure the MAP A/B narrow-band VE Learn function is turned off. FieroWannaBe MAY 05, 12:32 PM Sweet, I've made the decision to use this computer to try and control a 4.0l Northstar. From the supplied pinouts it looks like the knock sensor is not used in v8 applications? I dont know if you have experience, but couldn't I just enable the knock logging, and use knock retard with the v8 .bin? Rick 88 MAY 05, 12:35 PM quote Originally posted by chetw77cruiser: For those interested in using this to replace the stock ecu in a vehicle that has regular emission testing, this is probably not going to be your best bet. This swap is more of a "for off road use only" type of swap. The biggest issue is that there is no native EGR function. The other issue is that the testing facility will not see the proper ecu and information when connected electronically. There are programmable tables that could control the egr valve, but all of the intricacies of the OEM are not present. As for the 3.4 TDC/DOHC engine, it will control it without any trouble. The range of the code is somewhere near 9600 RPM, so you will run out of engine before fueling and spark. There are a few that must be changed to use this code with a DIS system, but nothing to worry about. With the right tuning and paying attention to the details, I would venture to say that on average a person would be able to attain an average increase of 3 to 5 MPG. Remember though, results may vary. This is the last year I have to do emission testing on my 88. Have you run one of these on a 3.4 PR swap already? chetw77cruiser MAY 05, 03:43 PM quote Originally posted by FieroWannaBe: Sweet, I've made the decision to use this computer to try and control a 4.0l Northstar. From the supplied pinouts it looks like the knock sensor is not used in v8 applications? I dont know if you have experience, but couldn't I just enable the knock logging, and use knock retard with the v8 .bin? As far as enabling knock with this ecu, you would need either an external knock module or a memcal with the correct or similar knock filter. With that taken care of, it is a matter of enabling the knock related parameters. Of course there is the matching the parameters to match your engine. chetw77cruiser MAY 27, 12:08 AM And now for your reading pleasure, I am about to transplant a 7165 with NVRAM/modified code into an 85 SE 2M4 with 5 speed. So far with the stock computer I have been able to attain 39 MPG. Let us see what the other setup is like. Considering that I have another 85 2m4, I am going to completely replace the ecu connectors with the 7165 ends. I this works like it should, I may make up adapters to go between the 7165 and the stock 4 cyl harness. Wish me luck. Keep tuning my friends. Chet W. engine man JUL 07, 12:44 PM Chet i want to try this on my 4.2 project i know i will need a reluctor wheel cut and have found the cad for it just need to get some one to do it and i suppose i will need the 2 crank sensors like in the N* jdv JUL 26, 10:01 PM Finished the 2.25 dual exhaust on the 3500 and now the wideband now reads 11 to 1 at start up and 14.7 when warm. But only the front cylinders are firing.The fuse was blown and I don't know how long it has been that way. I have always felt the motor was down on power.Now I need to find the problem. jdv JUL 30, 11:35 PM No the other green wire. O god what a difference it is when you fire on all six. Thanks Chet jdv SEP 22, 02:48 PM Runs nice and smooth out of the box with the new exhaust. now tune tune tune. THANKS CHET NICE WORK