I have a 94 honda Del sol w/ a DOHC VTEC engine turbo. I'm still trying to get my car tune ready but when my boost gauge goes from vaccum to 0 right before boost the engine begins to go crazy and sputter... Now my guy here that installed the system for me has been dealing w/ this system for a while now and he said it seems like it's the map sensor... I bought a map sensor from a local checkers store for a grand am GTP (supercharged)... THe sensor plugs right up and everything but could that just be the wrong sensor or should it work? I need my car tuned ASAP so I can drive it... Any help would be greatyly appreciated... THANKS..

Shane

Is your system set up to run a 2 or a 3 bar map sensor? You can tell by going to the manifold pressure adjustment parameters and seeing what is the highest number it goes. The 3 bar goes up to 30psi, the 2 bar goes up to 15psi. Im not if runing a 2 bar map sensor with a 3 bar system will run properly under 15psi or not. But its worth trying out.

I checked the manifold pres. values and it goes up to 14.6 I think then it goes to "no limit"... So that means that it's a 2 bar system right... I bought a 2 Bar sensor from SDS themselves and installed it today... It still does that sputtering thing... Even when i'm in neutral and rev it up at about 5000 to 5500 it sputters... I'm not sure whatelse it can be... thanks again...

shane

too much fuel/not enough advance? Its obviously not the map sensor- You've checked all vac. lines?

Not sure if it's to much fuel... Might be.. I haven't gotten the car to run "smooth" since it's been installed.. All the Vacuum lines are good.. I Spoke w/ the shop that installed it and he said it might be the values.. So i'm gonna take off one of the IC pipes and run it NA to see what it does.. If it revs smoothly then it's probably the values.. If it still does it then i'm not sure what it'll be...

Are you running any metering device for your air/fuel ratio?

Yeah i'm running a DEFI A/F guage.. But it's not a wideband... I am running rich but it only seems to be an RPM issue.. It sounds like a rev limiter or something... Thanks for your help.. I really appreciate it... =P

We think we found the problem... The thing that controls the injectors... We think that they may be bad... When the system is grounded seperately the injectors don't know when to close... THey stay open and FLOOD the cylinder... enough to look like a lake in the cylinder.. All but cylinder 4 were bad.. I had saturated injectors and the system came from a guy that had peak and hold... Is there a way to fix this problem or do I need a NEW system? thanks

shane

The component that runs the injectors is the injector driver. If this component is not working properly, then the injectors might either stay in the open or closed position. To run Peak and Hold injectors you need a resistor pack since the resistance on these injecotrs is around 3 ohms. To run a saturated type of injector a resistor pack is not needed, but if installed, it will not interfere with normal operations. Saturated injectors run around 16 ohms.

If you take a look at the wiring diagram in the installation manual it shows every wire in the system. The switched +12v wire that feeds each injector is spliced together. You have five grounds coming out of the ecu which it uses to complete the cirtuit and energize the injectors. One ground wire needs to be grounded to the chassis properly. Make sure there is bare metal to metal contact. The other four wires go to each injector. What you need to do is shoot the injector connectors. Have some one switched the car to acc. take a light tester/multi meter. Check the 2 points on the connector. On acc there should be no complete circuit. It should only complete the circuit through the connectors when the engine is actually spining/running.

Thank you... I'll check it out... The system previously came out of a car w/ a prelude engine (peak and hold) injectors and I have saturated injectors... Will that "break/fry" the injector driver? If so can it be fixed?

This is how we know it's the injector drivers... When the 2 major grounds were seperated and we tried to start the car.... It would crank about 1 and a half times then just stop and the car would kinna jerk.... We pulled the spark plugs and cylinders 1, 2, and 3 were FULL of fuel... The injectors were stuck open just pouring fuel in the cylinders...