I need some good fuel management. I'm really considering Megasquirt combined with a set of 450cc injectors I already have. If I order a pre-assembled kit from rs-autosport.com will I be able to run 15lbs safely with the fuel maps that come with the unit? Another general question. I've recently gotten my car back from a motor rebuild with forged internals. When my car goes to boosting (2-4 lbs) it fuel cuts. It never used to fuel cut like this before, does anyone have any tips for this?

Rodney's kits do not come with a preloaded map the last i checked but something may have changed. with the MS you will be able to run 15psi with the proper tuning. You WILL need to tune the MS regardless of who makes it for you.

As far your Fuel cut, I would need to know what you are using as a voltage clamp on the Map sensor. Missing Link, electronic FCD, or greddy e-manage ect?

unless your car is a 95 (or some 96's) you will need to keep the ECU from seeing any voltage over 4.70v for more than 2 secs.

Terry

I dont think I'm using anything as a clamp. I dont think I've ever had anything as a clamp tho. No FCD or missing link. I've ran 10lbs before and the fuel was fine except for the injectors not holding it well.... but maybe that whole time it was a fuel cut. Because it wasn't even holding 5 lbs sometimes. I dont know a whole lot, just know that when I'm boosting easy for the break-in period on the motor, that the car lunges forward and stops getting any power. Used to, I thought I needed better fuel management computer because I'd give the car full throttle, and it would stop getting power, but keep spooling up... not really lunging like it is now sometimes. I've got a Walbro255 fuel pump, holley 12:1 fmu, stock injectors and that's it for fuel system. I'm just really friggin confused right now on what needs to be done to get the fuel to respond right.

Well for starters tell me what year our car is.

Terry

1999 eclipse rs

I would say the motor is hitting a form of fuel cut. you will need a missing link or an electronic FCD. Not all cars react to positive pressure the same way. some fall flat on thier face others like mine just hiccup.

A type of voltage clamp should clear up your problem. why you are seeing it now and not so much before could be because the motor is different.

A megasquirt will solve the problem since the ECU uses the injectors to create the situation. Grain on this site uses the MS with no voltage clamp and he does not have the slightest problem.



Terry

Ok thanks man. Do you know where I can find someone to tune the MS? I live in south-central ky and have called around and can't find anyone with a dyno in lexington, louisville, or nashville... do u have any reasonably close suggestions?

With the MS logviewer and mstweak you can tune most of the fuel part yourself, at least to make it a daily driver. as far as spark you can do that as well if you are careful and start wiht someone elses map to get you going. as far as a dyno, i recommend it but you would have to ask someone from your area about a dyno shop. I am not sure where to send you on that one.

Terry

Which hardware should I get with MS. MSnEDIS or 420A/neon? I know this sounds like a retarded question but I thought I saw someone on here using MSnEDIS.

-Roman

edis was one of the first methods of running spark on our car. the 420a input is just the settings and a few hardware mods to input our crank signal and use that for a tach signal. So to answer your question you would be better off using the 420a input and spark control will be up to you. The latest method is to use the 4g63 ignitor and a crane ignition box for amplification.

Terry