- Joined
- May 27, 2008
- Location
- Rockland County, NY
Thanks Shabbs - I'm not using the Volvo ignition system, so I don't need to map for it. Good to know it can be done, though.
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No speed signal is no problem for LH2.4 (you lose overrun fuel cut, but I drove without it for a year or so and never noticed the difference). And there are ways to get the crank signal required. So 2.4 could be a possibility.
Also why the need to tune 2.2 when using it on a smaller motor? It has an airflow meter, and given the smaller engine creates less airflow there will be less fuel injected. With stock injectors and stock fuel pressure you should be running pretty well. From what I've heard getting good ignition timing is often a trickier business.
Ok - good to know the speed signal missing doesn't affect drivability. The reason for tuning is simply to recalibrate for the lower fuel requirements. Bimmer users has stared that they had to pretty much lean out the MAF to the maximum lean to get it right - and that is for a larger displacement motor than mine. I would rather not be in a position where I have no where to go in terms of adjustment. I'm hoping that it will be offset by simply using lower flow injectors.
On that note, have people used later composite body high impedance injectors (like those used for whiteblocks, mustangs, etc) instead of the original style Bosch?
When the BMW chaps are talking about this, are they also talking about LH 2.2?
This isn't to take away from tuning, but shouldn't this be a first step?
Yes, the AMM adjustment is very straightforward, and with the Volvo tool (which I still have from my days @ Volvo in the '80's) is a no-brainer - but, there is a limited window of adjustment. The point is not to end up at the extreme end with no further latitude for adjustment. I'm getting EV1 19lb injectors, which will be inbetween the stock Fiat & Volvo flow rate.
The main reason for modding the fuel maps is to shift the entire operating window, so that the median adjustment is still in the 'normal' range for the system as it was intended.
Some of the SAAB guys have modded fuel maps & reprogammed chips, so I'm hoping I can pick their brains on that.
Can you share the LH22edit? I can't find any active links to it anywhere...
EDIT - can I just use an Ostrich 2.0 with socket booster instead of programming chips? Is there any significant benefit to doing it this way? Can't tell from their site what software would be used, either...
Impedance wise they are high like the stock ones so should work fine in that aspect. That amount difference isn't enough. Long as the four you use are all the same. Let me know if there are any files you need.
lookforjoe, They are in a dropbox now.