David, are you going to add the mass pipe and upper intercooler pipping on the dyno yet? I want to see how much power it will gain from the stage 1.

 

Curious to see the results of this...

 

total brain fart dp>turbo.. What I'm getting at is the benefits of "wrapping/coating" the dp (in order to retain heat) in the exhaust system. The benefit of this is more torque and power... Along the same lines, a smaller diamter DP will retain more heat. But it sounds like the cat is dead on this issue where you found more power.

Can you do a dyno comparing a ceramic coated exhaust manifold v/s stock; wrapped/coated dp v/s stock... Many thanks
P.S. can I buy the 20G yet

 

No to throw too many requests at you David, but I would be very interested in finding out if all these claims about the benfits of wrapping or coating are justified in dyno numbers.

Thanks in advance

 

I have a manifold, 02 housing and turbin housing out being coated right now. When they come back we will be testing the port work, coated. I am not going to coat any factory unported parts for testing.

20G's, wheel is enroute to the turbo shop for inspection again.

I did not dyno the mas pipe/ic pipe yet, but we will. Also did not get a chance for the factory airbox test yet. I will get to it, promise.

THE DYNO SHEETS ARE UP ON OUR WEBSITE, PLEASE VISIT AND TAKE A LOOK. The Stg 0 and Stg1 numbers are up there. Just click on the EVO upgrades by the cartoon car.

Thanks guys,

David Buschur
www.buschurracing.com

 

Something else you can do that most guys don't with a Dynojet is print the graphs in number form rather than a graph. When comparing runs it is easier to see actual differences when looking at side by side columns of numbers than some lines on a page.
I printed some off yesterday and would like to share them, here are some different points comparing Stock to the Stg 0.

Stock HP/TRQ Stg 0 HP/TRQ
RPM 2500 59/123 59/124
3500 143/214 145/218
4500 206/241 236/275
5500 229/218 266/254
6500 236/191 287/232
7000 220/165 284/213

When printing this I actually printed every 250 rpm but it is too much for me to type. Other data on the page when done like this is interesting too.

Column MAX stock HP/TRQ Stg 0
236/250 289/279
Column AVERAGE 178/198 220/227

Very interesting comparing numbers instead of lines.

David Buschur
www.buschurracing.com

 

Dave,

Very interesting indeed .

 

wanted to subscribe, it's like an Online College Degree Program in Evonomics

 

The EVO is getting tied down again right now. Going to test the airbox theory today, test fit some other parts and probably work on the MAS pipe/upper i/c pipe today. That will finish off Stage 2.

Stayed tuned,

David Buschur
www.buschurracing.com

 

David, Since you'll be in there messing with the the stage two stuff, can you confirm that the "premium" upper IC piping fits or does not fit with the OEM airbox?

 

With the car at 316 whp now, Stage 1, I wanted to see what reversing the some things would do. My thoughts behind this are for stock maybe the stock parts aren't so bad, for modified as the power goes up I know they get worse and worse.

The airbox is one. Today I put the stock box back in. At stock HP levels the gains at peak were only 3 whp. Today switching back made the HP levels fall off 5.2. Starts to show more and more restriction as the power levels go up.

The other that didn't make much difference in the beginning was the BOV upgrade. I had actually left it in as there wasn't a change. Today I took the BOV back out of the mix and was surprised that the car lost 9 whp. More than that on the way up. I knew last time we tried it (on the '03 EVO) there was a gain but we did it later in the game than I did this time.

Back to more testing.

David Buschur
www.buschurracing.com

 

Good stuff dave. Interesting info on the BOV test. Keep it comming!

Terry S

 

Ever hear of chasing your tail? That's what I have been doing all morning on this testing.

Last time the car was run we hit the 316 whp mark. Today for a baseline pull we only hit 304, that's a loss of 12 whp for absolutely no reason. I looked some things over and made a few more pulls and it stayed consistant so I tested the BOV and airbox. The losses that I posted in my last post were from the 304 baseline I did this morning.

I put the car back to Stage 1 PLUS the Forged BOV with the stock MAS pipe and stock upper i/c pipe just like I had it when it made 316 whp a few days ago. The car made the same 304-306 whp it was hitting from this morning.

Aggravated I figured what the hell and put the upper i/c pipe on and the MAS pipe upgrade. Ran the car and the power was virtually unchanged, picked up a little. I then pull up the air fuel mixture screen and look to see if something is going on there. Sure enough, the car with the i/c pipe and mas pipe on it is LEAN. I am talking 12.4:1 AFR's on pump gas.

So I end up putting some fuel in with the AFC, do a run and the power comes up. Still a little lean. Add more fuel to the AFC and try again, the car hits fuel cut. (cold here)

At this point I was getting disgusted. I put a call into Al and we talk for awhile and he reminds me that one of the first things we did on our '03 EVO was sent him the ECU and had him remove the fuel cut, nothing else just fuel cut. I didn't even remember ever doing that. Now I am stuck with a car that needs more fuel to make power but can't take it because it fuel cuts.

Bottom line is with the boost turned down a little to try and actually get a number I was still able to get an additional 12 whp from the MAS pipe and the upper i/c pipe. This would not take into any gains from the BOV upgrade as it was on before.

After logging the ignition timing on the Snap On monitor the best timing number we could come up with is a ****ty 4 degrees of advance. That is sickly for a timing number.

Bottom line is this. As much as I have sworn by the AFC's and as much as they do add a good amount of power for what is spent it is not working on our '04 while it did on our '03 quite well.

The car needs to have the computer reflashed. Al is coming up the 14th to do some custom tunes for customers and to put a flash together for the Stg 0, 1 and 2. I am anxious to see what is going to happen.

As a side note, a customer/friend of mine with an EVO had our Stage 4 kit on the car this summer. He only managed to run a 12.9 at 106 with it, the car was tuned with the AFC. When Al came up in August for the shootout I asked him to custom tune this particular car. The guy left here smiling like mad and went straight to the track. He came back through a few hours later really smiling saying he had dropped his time to 12.6 at 110 mph. Later found out that his clutch was in horrible shape and the trans needed rebuilt. After those fixes the car has now gone 12.1 at 116 mph on a pump gas flash running 112 octane fuel.

David Buschur
www.buschurracing.com

 

Custom flash is the way to go My car is night and day in terms of before and after.

 

Amazing dedication...I have never seen, heard, or read about a tuner that is taking so much time to test their product. Props to you guys. Keep the info coming.

I love my Buschur parts and so does the Evo.