Looking For Dinan E53 X5 CAI: D760-0534

[bcredliner]

Originally Posted by X53Jay4.8is

The Dinan Hi Flow throttle body will require a software upgrade on the X5 to get it to run correctly. The Dinan air intake will work with no modifications to factory specs on the X5.

This is how Dinan gets the 4.6 from 340/371 to 369/382:

S-Stage 3 tune, free flow exhaust, throttle body and transmission software 349/374.

S1-Stage 3 tune, free flow exhaust, throttle body, cold air system, MAF, and transmission software 363/378.

S2-Stage 4 tune, free flow exhaust, throttle body, cold air system, MAF and transmission software 369/382.

Dinan didn't make any claims of performance gains for any mods unless combined with a tune. However, we know that more, colder air in almost always helps as long as the engine adjusts for proper air/fuel mixture so there is likely some benefit from the COI alone but without the other S level components my quesstimate is 6-7/1-2.

I haven't checked recently but transmission software has been available. For $300 it is a great performance investment. I have no idea how anyone today can get all the Dinan stuff to get to 369/382.