Originally Posted by john.hughes

Can you give me some information on these enhancements, like what effect they had ?

Sprint Booster (BDD451A2) - Wouldn't be without it now. Fantastic mod on the SRT6, not sure about how it would help a manual box much though. Totally different beast to drive and more exciting.

SL55 Y pipe air intake - Now I have worked out the best way to fit it and sourced the part, will be fitting it tomorrow. 1 person in the USA has done this and has seen a great performance improvment. Mine will be the 2nd one done.

K&N Air Filters - on agverage 3mpg more on a trip. No difference round town in mpg. Does seem to help the engine respond slightly better.

Rear Diffusers - purley cosmetic for me and makew it look mucj nicer at the back. I will post a pic soon (with the AMG badge too)

Thanks,
John