For those who've done the MD plenum spacer..
Definitely...I have the INJEN CAI too and it made the CAI sound so much better (at least I think it did).
Overall, I am extremely happy with the sound of my car.
I hear stock coupes and they just don't sound right anymore.
Overall, I am extremely happy with the sound of my car.
I hear stock coupes and they just don't sound right anymore.
Originally Posted by 99atlantic
it's pretty hard to argue with almost total parallel shifts in the dyno curve 

Ooooh, just got back.
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$
Originally Posted by 99atlantic
Ooooh, just got back.
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$

Originally Posted by andy2434
Sweeeet! Glad to read that you are pleased with your new mod. 


I took it out for another run becuase on the way home was traffic time.
2 things I noticed now that the roads are clear
- before, it always felt from 5000RPM onwards like the engine would die (probably fomr the front 2 cylinders not getting enough air). Now, holy ****, it pulls like a doubly raped ape from 5000 to 7000, feeling like it's got another few thousand RPMs left in that gear. That was the most pleasing to me - ever since day 1 it always felt like it had power from 4000-5000RPM, but after that point would just drop off. Now, hehe, problem solved

- downshifting from 2nd to 1st around 40KPH, hehe, barked the tires (pretty hard to do on my firehawk sz50 EPs - p275...ont he stock tires I could easily enough) and when I shifted into 2nd I lost the rear end....it wheel hopped a bit and almost went into the next lane, totally took me by suprise)
yep, yep, definate power increase. Soooooooooooooo worth it
Originally Posted by 99atlantic
Ooooh, just got back.
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$
Definate power increase above 4000RPM, no question about it. Pulled like a raped ape, hehe.
There was an change in sound (deeper/better)........definately well worth the $$$$

Thumbs up 99 Atlantic. I love the 5/16 on mine and I'm sure the 1/2 is a nootch above that.
Originally Posted by SimonxSayz
Besides the obvious hardware (spacer/nuts...), does the MD spacer kit come with a new gasket?
Originally Posted by andy2434
Yes, it does. I used both the existing and new gaskets. One on top and one below the spacer.
Originally Posted by 99atlantic
That's actually a good point that my mechanic poitned out to me - it should have come with 2 gaskets because on a car with a lot of mileage, the stock gasket would not be re-usable and you'd have to order a 2nd one.




