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Old 02-25-2003, 14:38   #1 (permalink)
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MPFI Conversion - completed

And what a weekend it was!
All started off fine, until it came time to change the fuel pump...it would not budge! had 3 mechanics trying to get it out with no luck, ended up having to take the fuel tank out and get to it from there. Anyway fitted the MPFI pump ( noisy as hell ) changed everything else over, no spark

Tried all day to get spark, ended up calling an auto electrician, turn out the MPFI Dizzy TFI was stuffed, so we're using the CFI dizzy for the time being, then we spent another 3-4hours getting the timing right so it would start. A total nightmare and I will never ever attempt another conversion...much easier to buy a MPFI's ea from the start! With that being said, I am one of those people where anything that can go wrong, will go wrong.

Anyway its in and running now, idles a treat, has a slight hesitation off idle but im yet to set the timing to 10deg's. Have to adjust the kickdown & acc cables properly, but i drove the car from brisbane to northern NSW without a hiccup, so must have done something right

The best thing I have noticed so far, besides the increased performance. is how smooth it is...even when cruising. When sitting on 100kp/h with the CFi setup i seemed to be pressing the pedal down alot further than I am now, just have to touch it to be sitting on 100...im very happy with the results....now im off to make some adjustments
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Old 02-25-2003, 15:24   #2 (permalink)
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yeah the timing on Falcons is absolute BITCH!!!! I spent 3 hours stuffing with mine and it's still not right. You line it up the way it is supposed to go and the bloody thing won't start!
Worse thing is my mech is flat out till friday so to day I'm taking it to an unknown mech to get it perfect cause I can get it to run ok but not perfect.
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Old 02-25-2003, 15:44   #3 (permalink)
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6 in a row, good work buddy

Doug and I happened to have exactly the same problem with the TFI! It was stuffed so there was no spark. You did not need to put the CFI dizzy back in, all you had to do was swap the TFIs.

It's a matter of removing the screw on each side of the plastic cover plate thing. Then all you have to do is slide it downwards slowly and Bob's your uncle!

I haven't changed the fuel pump yet and it works fine so far. Only problems I have had were high idle (which has fixed itself) and jerking when you change gears (manual). The jerking hasn't stopped and Doug thinks it's the fuel pump. Guess i'll have to get one and chuck it in then.

Just remembered another thing. The accelerator cable isn't as tight and bouncy as the CFI one. Don't know what that's all about but it just feels that way. The revs dont rise as quickly as they did on the CFI, may be that's fuel delivery problems too?

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Old 02-25-2003, 15:57   #4 (permalink)
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yeah sundeep, sounds like it could be a fuel problem or even timing, if its not spot on it will struggle to rev out. I agree Carazy! lined the dizzy up how we were supposed to and the thing wouldnt start! turns out we were around 4 teeth out!
Sundeep, the auto eleccy told us to switch dizzy's as it was an earthing problem from the ECU to TFI, he hooked up another earth wire under the dash which gave us spark, but he said we may get intermittent spark problems with this dizzy. I have also found that the pedal feel is better in the MPFI, the CFi accelerator was stiff as hell in comparison, the MPFI one sort of "floats" ( Lack of a better term )
All in all I am happy, but just noticed I cant switch from windscreen to face with the aircon, so I must have left a vaccum hose off, is it the green one which controls this?
Also, my airbox seems to sit too low, so the snorkel neck doesnt line up with the mouth. Are there spacers or something for the bottom mounting bolts?
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Old 02-25-2003, 18:01   #5 (permalink)
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Gld to hear it went well anthony. Yes the airbox has rubber spacers on it. As for timing the easiest way i found is to have the motor on TDC intake stroke, slide the dizzy in and then turn it so the mark on the rotor is in line ith the mark on the case (which happens to be under the black base) If it doesnt look like it will fit pull it out and turn the shaft left or right one tooth.
Carazy timing isnt that bad - its just in the worst possible spot especially when the engine is hot. We all remember to set base timing the ecu must be in self test mode?

In the tutoral ill do it will show how to set up the dizzy properly. but untill then i can only try to explain how to do it.
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