Incorrect Lambda reading - Rovergauge - AFM
Discussion
That multiplier is used in Land Rover 3.9 No-cat tunes. Marvin you could try a TVR 500 tune from one of those listed on SteveSprint's site to see if that makes a difference to the fuelling (it should do):
http://www.stevesprint.com/remap-14cux/bins
http://www.stevesprint.com/remap-14cux/bins
blitzracing said:
PH430 said:
I have got the same issue.
On not totaly hot engine the direct reading is 32% on totaly hot it comes down to 29/30%.
The heat affects the output of the AFM. On hot engine somtimes the engine would look to stall, but the ecu keep it alive.
I have got a 20am AFM on stock with a new MA chip. Mark; is this AFM better on output then the stock 5am?
Depends on your engine size- the 20 AM let more air in as its bigger, that can liberate a few ponies given the correct chip if you are over about 250 BHP, but makes little difference on engines below this. I think its worth about 10 BHP on a stock 5ltr.On not totaly hot engine the direct reading is 32% on totaly hot it comes down to 29/30%.
The heat affects the output of the AFM. On hot engine somtimes the engine would look to stall, but the ecu keep it alive.
I have got a 20am AFM on stock with a new MA chip. Mark; is this AFM better on output then the stock 5am?
My engine is a 430 with 275bhp on the stock 5am. I hope it will be 285bhp with the 20am.
tvr marvin said:
Hi,
I didn't change anything and it says map 5. I thought that is correct for a 5-litre?
Car is completely stock except for the pre-cats being removed and the 123ignition.
But I run the normal Rover ignition curve (except for 2° less vacuum advance).
Marvin
I have also the 123 ignition. Please check with a strobe and vacuum off if the timming is correct. Normalwise the standard ignition timing is 10 degrees on this 123 ignition system.I didn't change anything and it says map 5. I thought that is correct for a 5-litre?
Car is completely stock except for the pre-cats being removed and the 123ignition.
But I run the normal Rover ignition curve (except for 2° less vacuum advance).
Marvin
To the standard timing it will be;
123 to standard
0 = 10 degrees
5= 15 degrees
15 = 25 degrees
PH430:
Yes, I checked the ignition with a timing light, it sits at 8°BTDC at idle.
The difference in map and multiplier seems odd to me, since I never touched the ECU. Is it possible that it was swapped for a standard 3.9? By somebody who didn't know what is different?
And I don't even try to change anything. I only want it to run right...
Marvin
Yes, I checked the ignition with a timing light, it sits at 8°BTDC at idle.
The difference in map and multiplier seems odd to me, since I never touched the ECU. Is it possible that it was swapped for a standard 3.9? By somebody who didn't know what is different?
And I don't even try to change anything. I only want it to run right...
Marvin
Gassing Station | Griffith | Top of Page | What's New | My Stuff