12:5-1 pistions in xe on std management

[partytownsri]

as above, is anyone else running these pistons on std management or do i need after market management thanks mike

[craig green]

I think you will need aftermarket management. The extra fuelling, timing issues & knock control will be outside the spec of the std map.

You could have the Motronic live mapped perhaps.

[Stuart]

plus 12.5:1 is a tad on the scary high side too..... unless yovue got bonkers cams.

[craig green]

Sounds like it needs TBs to run properly.

[Stuart]

not nessecaraly, but if its running a silly CR to compenstate for silly cams then TB's would be a huge benefit..

[partytownsri]

the person who had it before me was running tb's and cams with aftermarket management but is there any way i can get it to run correctly for now eg getting it mapped.

[Stuart]

yes get it mapped properly.

ultimately what do you want to do with the engine (spec wise) and what have you got at the moment?

[partytownsri]

after a while i will eventually get some tb's and cams but cant afford at the moment it has forged pistons, arp head stud conversion, arp rod bolts, grp a bearings, steel headgasket and a ported and polished coscast head with everythin else std, what would i tell the people that i get to map it

[Stuart]

can you get away without using it for now? and then save up to get all the work done at once to save two mapping trips...

[partytownsri]

not really, how roughly does it cost for a remap

[Stuart]

depending on the map in the ecu at the moment, it would be a cse of backing the ign off and maybe leaning off the fuel a bit... Id guess atleast 2-3 horus on a RR @ say ?50 an hour.. thats a totally rough estimate to be fair.