2.4 Bridgeport ECU

[woody]

Wanting to resurrect my 89 Mirage Jag S/R with 2.4 Bridgeport , same year . Ecu had a chip but now I cant locate ECU or chip . Won't run well on stock Bridgeport ECU . I believe it has 260 porting . No parts here in Manitoba Canada . Any suggestions ? It's been sitting for 10+ years . I am hoping to take the Jag to a Grande opening for a 26 slip Marina I designed and built last year , I have 30 days till Grande opening .

[AlanButts]

same here , running an 11350 ecu now but it dos'nt like it

[woody]

Does anyone know how the Jag would perform with a 2005 Yamaha F150 ?

[OnPad]

How bout, adjusting your fuel pressure. Otherwise, Brucato, Power Performace for ecu, or John Marles used to sell chips.
I'm the last that should be giving you advice on this subject, but it looked like this thread needed a bump start.

[woody]

Thanks for the bump OnPad . I have two 2.4 BP Outboards , one is stock needing one sleeve . the one I am wanting to get going wont run with stock ECU . Brucato ECU would be over $2000.00 Cdn. Don't need to go 100 mph again but would like to get on top of the water now and then . Is there a way I can make the stock ECU work till I re-build my other 2.4 BP ? 240 HP is all I really need anyway and will still stretch my face .

[OnPad]

If you install a adjustable fuel pressure regulator.You would have a adjustable fuel map.

If your engine won't start and idle you probably have other problems.

Sorry, not a fan of the Yamaha f150. My neighbor had a brand new one, on a little bass boat. It blew the plastic (timing?) gears, filled the whole engine with plastic shavings.

[25two.stroke]

If your BP won't run with a stock ecu then either the ecu is bad or there is somethin else wrong with the motor. I know you pm'd me about an ecu and I told you to go the brucato route...they are a lot of money though.
I would look for a digital 11350A40 box...they are hard to find but run great. If you can find any digital 11350 box (from a 260 or whatever) you can have John Marles make you a BP chip for it and even bump the limiter up if you want.
But...it sounds like somethin else is wrong or the other stock ecu is no good also. Not sure who told you about 260 porting...I don't think theres any way to put 2.5 260 porting into a bridgeport. HOWEVER: even if you did have 260-like porting in your motor a stock ecu would make it run pretty ​good.

[woody]

Thanks for the info . The ported BP i am trying to resurrect will start and run on stock ecu , just not as well as the CDI ECU that was on when I purchased the ob . It needed the throttle bumped up somewhat to even idle so I never tried much and assumed it wouldn't work . I will re-install and report back asap Thanks again .

[25two.stroke]

Thanks for the info . The ported BP i am trying to resurrect will start and run on stock ecu , just not as well as the CDI ECU that was on when I purchased the ob . It needed the throttle bumped up somewhat to even idle so I never tried much and assumed it wouldn't work . I will re-install and report back asap Thanks again .

This is probably due to the cdi ecu using an internal MAP TPS rather than relying on the external tps (either rotary-pot or 5 wire module). If you run the stock one make sure you have a tps on the engine and make sure its good. The cdi ecu didn't need the tps...so it could be bad and you never know it. As soon as you put on the analogue box back on that needs the tps it don't run right. Might just need the tps adjusted too.

[woody]

No TPS , on both motors . I assume the tps should be on the horn somewhere ? Tan. Orn. Blu. harness not connected .

[woody]

Found the 17814A4 external tps in the box of bp parts . going to install tomorrow and see if it runs .Thanks for the info , just might be taking the Jag to the event after all !

[25two.stroke]

Yeah...you need a tps for that ecu LOL
This a 260 but same deal. Not my pic.

[woody]

Starts and idles now , seems really rich . Not charging and won't rev up much , going to change rec. and try again tomorrow . Promising . The rev limiter is not installed , would that cause issue other than over rev ?

[25two.stroke]

Disconnect the tpi module and start it again to see if its charging. 5 things can make it not charge: stator, rectifier, voltage regulator, tachometer and (maybe) the tpi module. I never heard of a tpi module doing that but it does pull power off the voltage regulator which pulls off the rectifier. If the tpi is the only thing you changed and now its not charging, and was before, I would take it back off and see if it starts charging. If it does then your tpi is no good. Try to get it started with the tpi off long enough to check charging.
Seems rich...make sure (after you determine if the tpi is causing your voltage issue) that the vacuum line is hooked up to the correct port on the tpi. No need for a rev limiter on that engine.

[woody]

Going to cabin today for weekend will get back to work on BP Monday . I have original service manual for the 2.4 BP and I should be able to figure it out , I also have all the parts from stock BP if needed .Thanks again for the help , I would have never known about external TPS and probably would have been looking for carbs .