View Single Post
Old 12-14-2005, 09:53 PM   #57
patr
Scooby Specialist
 
Member#: 97
Join Date: Jul 1999
Location: Vancouver, BC, CANADA
Default

(EDITED to make an easier read)

Here is some bone stock 05 WRX data for all of you (very similar results with the 02-05s, with just that the earlier models dont have the CL hiccup and a few minor changes).

All these pulls are from the same car with just a flash, **no uprated pipes at all**, all pulls within 15 minutes of each other with maximum advance and stabilized inlet temperatures for the specific test method. I show a minimum of 2 pulls in each method to verify that it is consistent, not a one off, and very real.

Bone stock 05 WRX - 177.2 uncorrected DD whp

and now that same bone stock car with JUST a flash

Bone Stock 05 WRX w/ Rocket Reflash - 198.3 uncorrected DD whp

Here they are comapred:

Bone Stock 05 WRX vs. Bone Stock 05 WRX /w Flash Only

Now, for the techie in you, I've also posted those with EXTREME ramp rate (i.e. super slow pull, high temeratures, and little to fanninh) - not what we normally do but useful for data gathering. This is the 'worst' it could read. Note that the relative gains percentage wise are similar, and I have included 2 pulls in each method to also demonstrate it is not 'flukey'.

Super Heat Soak Bone Stock 05 - 162.6 uncorrected DD whp
(you can really see the OL/CL hiccup here)

Super Heat Soak Bone Stock 05 w/ Rocket Reflash - 181.5 uncorrected DD whp

Here they are compared:

Super Heat Soak Bone Stock 05 vs. Heat Soak Bone Stock /w Flash ONLY

Note that we are not just "factoring the pulls by some number X", they are actually seperate pulls. To back it all up, the relative increase is almost exactly the same (percentage wise), when comparing normal pull mode gains vs. heavy ramp mode gains. This is all done just to have more 'comparative data'.

Everyone's graphs are published with the first method but I actually keep all data on method 2 as well (part of the tuning process).

For reference purposes, WRXes with just catbacks pulls 175-183.

normal stocker is ~165-175 range.

point being, if you dyno it a certain way, the same way, every time, its consistent. If you have inconsistent temps and fanning and correction and what not you can see +-5%. So if one guy comes in on a -10 day, and another guy at +40, you get some variance. We can publish correction factors, but temp correction SHOULD NOT BE USED on the dyno for tuning purposes. All the graphs we give our customers use the first method. That way if someone comes back 6 months later, it should be the same. 'nuff said.


-Pat
* Registered users of the site do not see these ads.

Last edited by patr; 01-25-2006 at 04:08 PM.
patr is offline   Reply With Quote