Messages

1

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 24, 2007, 08:49:42 PM »

You should check the following:

- fuel filter (just replace it)

- fuel pump  (low delivery can cause low power/stumbling at WOT as more fuel is required then.  Last week a car I was tuning had this same problem and the pump was faulty.

- it may be your ignition coils.  Try swapping in another one, that's the easiest way to check it.

The topic of your original post seems to indicate the problem is with my chip, but then you go on to say that the problem occurred with the stock chip also...   You should have fixed the problem before installing the chip.


Mark

No I never once thought it was the chip, I have faith in you  But yes that is something I'm going to check out (the fuel filter and pump) Thanks for the reply.

2

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 13, 2007, 08:40:54 PM »

I use 93 octane gas ever since I bought it, I have NGK's with two electrodes they look to be in good condition but they look a little reddish. what could cause that (lean mixture,hot plugs etc). I bought the car a few months ago. I wanted to find out what exactly caused the hesitation before I spend a hole lot of money guessing what it could be. Umm  the wires seem to look in good condition and the car idles fine but I don't know what they are doing at high rpm's. I ran lucas injector cleaner when I first got it on the road. I'm planning on throwing in an air/fuel gauge to get some kind of idea what the mixture ratio is at wot. Sometimes when I pull the clutch in and the rpm's come down past idle and the car almost stalls, this is once every few days or so. would a vacuum leak cause this random problem?? wouldn't it be all the time?

3

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 09, 2007, 09:10:11 PM »

Thanks Red Is 91...  very helpful

4

Engine + Driveline / Dynomax muffler

« on: April 09, 2007, 04:38:17 PM »

could you tell me the specs(inlet,outlet size) or part number of the dynomax muffler?

5

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 09, 2007, 04:23:42 PM »

Do you know where I can find the values of resistance to see if my AFM is on the right track. Or do I have to swap it with another?

6

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 06, 2007, 08:21:51 PM »

No not really, but I'll check it out thanks

7

Engine + Driveline / Mark D 93 chip in my m42 lacking power up top

« on: April 05, 2007, 08:12:05 PM »

I just put in the Mark D 93 oct chip in my m42 and also a green performance air filter in the airbox the same day. well the car seems to have improved noticably in midrange  2.5k-4k  but 4.5k up seems to die down. Does anyone know what could be the problem? sometimes the car takes longer to start then usual and hesitates when you hit the gas. don't know if these things have anything to do with it (but existed before the chip) any ideas to what the problems could be would be greatly appreaciated thanks