Originally Posted by mdrobc13
Hmm.. I already have a Dinan Stage 1 and an Eissenman Race exhaust so I figure the Inter-coolers would cost just $2500 +$900 to Stage 4 as you say. Not sure benefit of the LSD yet but looking closely.
Would like to see if anyone has done either of these big upgrades before to a 550i tho.
Oh yes...sorry I missed that you already had the Eissenman Race exhaust, so no need to get the Dinan exhaust. Don't forget labor costs for the inter-coolers, which would probably run around $500.
I just cant justify spending 3k to go to stage 4. Diminishing returns start to kick in when spending that kind of money for maybe a 20 hp bump.