Brera 2.2 remap?
Discussion
One thing i havent seen mentioned about the 2.2 yet
The 2.2 is a GM lump with an alfa head (unlike the 2.0JTS, which is an old 2.0 TS bottom end with a direct injection single spark head stuck on)
Those particular GM lumps use a timing chain, which normally would be a good thing, BUT on these units, the chain is prone to stretching, throwing the timing out of whack, lowering power output and potentially throwing up ECU errors. Opel/Vauxhall did a recall for these units with a fix, Alfa never did. Some JTS units out there will have had there chains replaced with the same (prone to stretching) item, some will have the GM fix applied (unofficially off course), and some will still have their original chain.
The 3.2 V6, despite being another GM bottom end with alfa heads isnt prone to this issue.
If i were brera-159 shopping, i'd steer well clear of the 4 cylinder JTS units, to the point where i'd take the (reportedly underpowered) 1.8 MPI in a 159 over a JTS.
In the case of a brera, if mileage doesnt justify the diesel, and the 1750 is out of budget range, the V6 is the obvious choice. It might not be a buso, but it is still a V6, and reportedly a less trouble-prone engine.
EDIT: also, the V6 unit was most popular for tuners like Autodelta to get their hands on, there have been 3.7 bored out rotrexed version of it (i think most/all V6s are Q4 as well)
http://www.autodelta.co.uk/showcase
The 2.2 is a GM lump with an alfa head (unlike the 2.0JTS, which is an old 2.0 TS bottom end with a direct injection single spark head stuck on)
Those particular GM lumps use a timing chain, which normally would be a good thing, BUT on these units, the chain is prone to stretching, throwing the timing out of whack, lowering power output and potentially throwing up ECU errors. Opel/Vauxhall did a recall for these units with a fix, Alfa never did. Some JTS units out there will have had there chains replaced with the same (prone to stretching) item, some will have the GM fix applied (unofficially off course), and some will still have their original chain.
The 3.2 V6, despite being another GM bottom end with alfa heads isnt prone to this issue.
If i were brera-159 shopping, i'd steer well clear of the 4 cylinder JTS units, to the point where i'd take the (reportedly underpowered) 1.8 MPI in a 159 over a JTS.
In the case of a brera, if mileage doesnt justify the diesel, and the 1750 is out of budget range, the V6 is the obvious choice. It might not be a buso, but it is still a V6, and reportedly a less trouble-prone engine.
EDIT: also, the V6 unit was most popular for tuners like Autodelta to get their hands on, there have been 3.7 bored out rotrexed version of it (i think most/all V6s are Q4 as well)
http://www.autodelta.co.uk/showcase
Edited by Vitorio on Friday 25th November 10:41
xyyman said:
I heard, from an Alfa specialist, that the Prodrive ones went to 2WD to lose a bit of weight. Maybe Alfa also did this for the same reason later on.
Could be, and the amount of power they make (stock anyway) is doable on FWD, so for what is mostly a GT, the Q4 didnt make too much senseGassing Station | Alfa Romeo, Fiat & Lancia | Top of Page | What's New | My Stuff