Quote:
Originally Posted by mdrobc13
It looks like most 550i buyers out there are getting a pretty good deal on their 550i's and so have more than enough left over to mod up to whatever performance level they like. Seems like the N63T (550) engine leaves a bit as compared to the S63T (M5) to allow tuning up to M5 performance standards at a cost of maybe 1/5 the price delta even if one goes for Dinan parts.
- Aftermarket Exhaust - $2000-3200
- Dinan Stage 3 Tune - $3800
- H&R Suspension mods - $300
- Dinan Intercooler -$2600
Even at that price you're still way below the price of an M5 similarly equipped. Best deal I've seen on one so far is $98k and that was minimally optioned. Fully optioned 550i or 550ix have been going from around $65-75k so you do the math! For some the M5 is the only way to go...for others the 550i is an option. Its all about choices gents. 
BTW does anybody know if you need the Dinan Intercoolers to go to Dinan Stage 4? Or can you do them in stages (i.e. add Dinan Stage 4 then Intercooler) or must they all be done in conjunction at the same time? |
You can go stage 4 without the intercoolers, but you wont gain anything from the stage 3 tune. There is very little difference in tunes between stage 2 and stage 4. The power bump comes from the hardware (exhaust/intercoolers). The tunes simply optimize the performance of the new hardware.