What could cause this?

[DCGN]

I just installed 60 lb Mototrons and Extender chip, now I have low AF readings @ 3 and low lv8 @ 27-28. Also, the blm's are high @ 135 at idle. This is after setting the Translator base fuel at 10% rich. I changed from 36 lb injectors and TurboTweak chip. Does anyone have any suggestions as to what could cause this?

 

[ES1]

Not sure on the others but I think the extender reads MAF @ 1/2 value so your MAF is really 6 which is good.
Does the chip have the fast up date patch?

 

[MSDGN]

You are correct...MAF readings will be half when using the Extender chip...also 135 BLM is not high...well within the normal range...

 

[DCGN]

Thanks. Yes it does have the fast update patch. So the AF is good, what about the lv8 low reading?

 

[DCGN]

You are correct...MAF readings will be half when using the Extender chip...also 135 BLM is not high...well within the normal range...

I know 135 is within the acceptable range but it was reading 128-129 with the blue tops and TurboTweak chip. Could it be the injectors that changed the blm's?

 

[SloGN]

the extender chip features also the ecm to see 512 grams of air instead of 255 so all the info you get from direct scan/scanmaster on the maf grams will be half of what they normally be.


in a good tune your blm's should be + or - 10 so your good. i


does the extender chip also extend the lv8 tables to 512 also


it would make since cause load is figured my TPS/rpm and air flow. if the air flow is doubled the lv8 may have to be to make the ecm function correctly

 

[MSDGN]

The higher BLM's are most likely a result of the new chip and injector combo...mine did the same thing...when I went to Extender Extreme and 72 lb injectors BLM went up to 140...not a big deal...as long as the BLM's go back down around normal when I'm cruising I'm OK with it...

 

[DCGN]

Ok, thanks guys. I took the car out this afternoon and drove it about 20 miles. When I got back the blm's were 130 at idle. So I'm good. Thanks again for all your reply's.

Dan