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      02-22-2008, 05:27 AM   #233
Z4coupe
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Drives: 2007 Z4 coupe
Join Date: Feb 2008
Location: Fall River MA

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Quote:
Originally Posted by RPIpower View Post
I want to thank Earl for taking the time to come down and see for himself.........

Earl and I talked a while ago and he was asking me about the scoop. Anyways, he came today and we did a bunch of dyno pulls, etc.



You can see the hp and tq difference between having the ram air and not. These tests were done WITH THE STOCK AIR FILTER. Earl is STILL using the stock filter so NO FILTER was changed. NO BMC, No K&N, bone stock. You can also see that removing the charcoal filter does little to nothing w/o the ram air set up as with ram air, there was only a 1-1.5whp gain.

The best thing about all this was that we ran the car over and over again on the dyno with heat soak. Even Earl asked me if I wanted to open the hood and let the car cool down a little. I said, "no, I love to underate our gains." Its not uncommon for companies to let the car sit for 30 minutes or an hour so the car would cool down before dyno testing their product. Maybe Earl can chime in but I dont think we let the car rest even 5 minutes between pulls.
Is this a dyno for a SI coupe? I ask because of the rear wheel numbers. If it is where do I sign up? Just by looking at the graphthere is a huge jump in Hp at the 110mph level and widens by a lot up until 125. What were the exact numbers gain over stock? I hope this is a dyno for an SI. Keep us posted.
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