I was looking and considering another power addition to my car. I have a 2005 MCSa with about 6700 miles on the it.

My mods are as follows:

Alta 15% reduction pulley
Alta 0% light weight crank pulley (stock size)
Alta Intake w/o hose
Alta Oil Catch Can
MyMini single muffler exhaust
Denso IK22s
Kingsborne Wires

Now I haven't done any dyno testing on my car to see its real power but each mod above has lightened my wallet and made the butt dyno happy.

So what do you all think? I am considering the M7 throttle body of 62mm
Link

 

I think you should hold off on the 62mm TB as many suppliers have started noticing some issues with larger TBs on 2005 model cars such as more pronounced yo-yo and a more noticeable flat spot between 3000-4000 RPMs. Many of them are actually doing some additional research on 60mm TBs, such as Dinan and M7. Personally I would spend the $350+ on a good ECU upgrade (from your notes it does not look like you've done this yet). I think you'll notice a bigger performance improvement with that change as compared to a TB at this point.

Also, you've got the Kingsbourne and the IK22s, why don't you upgrade your coil pack for another $75 and put those babies to good use. oh, and do not regap your plugs. keep them at 0.038.

 

I've thought about doing the coil with a MSD for some hot color

I agree on the TBs on a 2005. Peter of M7 said he was doing 2mm bigger on 05s but I was like that seems so small.

 

We've had a lot of good results with several piggy-back ECU's that we have used. We have a couple S's running around with similar mods as yours as well as head work and cams. As well as better performance we're seeing mpgs in the mid 30's. Don't waste your money on a throtle body as there is no restriction there, the head is where it's at.

 

I forgot to add I have the bargain MTH as well but saw no difference with it. As for the head its also where the money is.

 

depending on budget.......light wheels and tires will give you much more than a TB.

If you insist on the engine. I would spend a little money and get the Alta hose......

upgrade your rotors and pads.....do you have a sway bar.....short shifter?

THe TB is way down my list

 

Wheels, I am waiting till I need new tires.
The Alta house for the MCSa isn't out yet...

I'm thinking of doing brakes soon maybe instead of more power. I have a 22mm sway bar.

short shifter...let me tell you about mine. I don't even have to take my hands off the wheels its so close (MCSa )

Here is my full page of mods:
http://mdsbrain.com/mini/?page_id=9

 

I'm sorry....you have a MCSa