a6 vs a4 ecu? & swap

[accordztech]

if i put a a6 ecu into my a4 engine will i get an improvment? really im looking for gas milage. i know the a6 comes with dual runners and i wont have that, but who cares.

would it work? is it a direct swap? would i run into any problems?

i wonder if i should put this in swaps =).

[WiKKeDV16]

it will run.. weither you will get better gas mileage is uncertain seeing as how the A6 produced more power than the A4 and yes it is a direct swap.. u wont have IABs but who cares.. ur in it for gas mileage not power.. anyway.. u said u tried everything but obviously not everything.. swap the ecu and see what happens..
dont give up on the cb7 there is something ur overlooking... on fuel..

[accordztech]

well now im concidering just getting the f22a6 manifold and swap it into my car.

any tips or suggustions? whats the number for the ecu? p06? or pt6? i dont know.

how much would a full manifold run for at pick and pull...

i hope i can find a clean one or make one really clean hahaha

[accordztech]

a6 manifold

....whats that vacumn thing behind it?? marked by 25, 45, 26 49 etc??


a4 maniold.

[rebels]

What is your gas milage like, you are always trying to improve it. How bad is it really?

[accordztech]

265 per tank. city. freeway, 280 MAX

i fill up with 14.06 gallons.

[NutBucket]

Originally posted by accordztech
265 per tank. city. freeway, 280 MAX

i fill up with 14.06 gallons.

Jeez. That mileage sucks. I get better milege with the H22. Hell, before I swapped I could get about 400 miles on 13-14 gallons. I got my F22 sitting in the backyard. Maybe you need that instead?

[Andrew]

What haven't you checked yet? I ask because SOMETHING is broken... and by broken, I mean not working right. You should go through your fuel system from tank door to injector seals (although I think you checked those seals already:P). You're about 1/3 down on the rest of us, mileage wise. Check for leaks, check for strange noises, check for worn out stuff, bring your car to the continentals and let me go through it with a fine tooth comb... there's got to be something you haven't checked yet.

Heck, go so far as to do a compresison check. Maybe this in indicative of a larger problem?

[MRX]

that vaccum thingy is the vaccum that opens and closes the iab's.

[accordztech]

well i tested my o2 sensor so i think its bad, so thats apart of my gas milage, i have a post in tech about it.

oh i c what that vacummn does