remote tuning for A2A (or even MAF-less?)

[Schwuppes]

hey people,

Apparently the biggest challenge with getting a A2A tune right (on a L67 btw) is the idle tune... because the air gets measured at the MAF and then has to travel another 2 or 3 meters through the IC and piping. So it kind of "confuses" the ECU and tune.

So yea, long story short, have there been succesful remote tunes been done for A2A intercooled setups? I.e without high idle and hunting etc...
And can MAF-less been done remotely with TunerPro and delcohack?


cheers

[The1]

MAF is your auto fuel tuning for Flow/Density/Humidity etc any atmospheric condition change , so if there are changes to any of the incoming air and you want your fueling to auto adjust for these it needs to be located in that position, so obviously in a section of pipe before the TB. If it is not then it cannot auto adjust for some of these conditions if it is before a cooler for eg, then the fuelling will be out, you will be trying to adjust it via your wideband but you will be constantly fighting it when the conditions change this will be an error margin that you cannot get rid of.

If you have idle issues like hunting then there is obviously a burn issue lean/rich or injection timing issue.

Remote tuning or in person does not really matter if the person knows what there doing, obviously in person helps and makes the process easier, obviously on a dyno helps achieve static conditions and loads if you need to tune for those. Though large hills in a lower gear can do that to lol and the looks when you drive up and down a hill in low gear at constant rpm is priceless

MAF is quite capable of anything you could throw at it with Enhanced MOD if you want to go back to MAP Kalmaker is your only option.

[Schwuppes]

ah ok... learnt something again....

So the "lag" with A2A between air passing through the MAF and it actually getting into the LIM/engine ... that doesnt have an impact?

[The1]

if the MAF is positioned before the TB Lag shouldn't be an issue unless Acceleration Enrichment is out if your refering to Lag on Tip in.

[charlay86]

Its probably also worth noting that the MAF signal is lag filtered by the pcm to smooth it out.
This is the reason that the transient fuelling needs to be adjusted if you are increasing the transport delay.
you can move the MAF providing you don't interfere with the airflow through it, it is best to have it in a straight section of pipe. Moving the iat sensor to the LIM is important too imo if you want to be able to achieve a less conservative tune

[Schwuppes]

cheers guys...

Im unsure in which direction to take my car... id love a A2A cooler and continuing with delco remote tuning would be awesome
its just that it has so many quirks and easy to grenade the motor if not tuned right... thats why A2A was so unpopular for a long time... and even now is only tuned by kalmaker tuners as far as im aware.... even in the states they only use W2A for the same reason.

Has anyone here actually tuned A2A before?

[kojab]

This is an easy one for me to answer. Yes many.

[ejukated]

I know of one of the A2A L67s I've tune and its been trashed every day for the last 4 years and theres been no issues at all. They even went to the quarter recently and its run the exact same times it ran years ago. Theres no reason why an A2A cant run spot on with no stalling etc if the tune is right

[Holden202T]

Or any car for that matter!!