Dave,


With all of your research and parts on our Evo VIII's and Al's Dynoflash I believe that it would be a no-brainer for someone to follow your staged upgrades and have great success with anything they want to do with their Evo's be it a quarter mile event or a racetrack. I have your staged upgrades on my MR and Al's custom Dynoflash & would not trade them for anything. I just want to say keep up the great work and keep us posted as more parts are tested and new custom Buschur tunes become available.

Thanks again for all of the help.

Derek

 

4bngr,

I did the testing on killing the cat earlier in this thread and posted all those results.

Going from the 2.5 dp with the stock cat and a 3" catback to the 2.5"dp, offroad pipe and 3" catback increased the power by 20 whp and 22 ft lbs of torque. Going with the full 3" system over that increased HP by another 2 hp (more in midrange) and 10 ft lbs of torque.

David Buschur
www.buschurracing.com

 

I would very highly recomend the Alcohol injection kit for your car

Basically NO need for race gas ever - all you do is turn it on and turn up the boost !!


I just ordered one for my highest whp stock turbo customer - Paul who won the WRX vs. Evo shootout with an 11.8 on basically a Buschur Stage 4. We'll see what kind of gains it makes on his car and I also ordered one kit for my car also

Without a doubt thealcohol injection is the biggest power revolution I have seen in my two years with evos. I plan to devote myself 100 % to the learning about and tuning with Alcohol over the next few weeks.

 

good news Al please keep us posted..

 

Dave-

you tested
1) 2.5" dp (2.5" cat delete) and 3" cat back, and
2) 3" dp (3" cat delete) and 3" cat back and found:

2hp and 10ft lbs increase using the 3" full exhaust. This only factors the 2.5" dp and 2.5" cat delete. But to complete the 2.5" system, I'd like to know the power diff. b/n your catless 3" turbo back (which are figures you already have) and a full catless 2.5" turbo back (2.5" cat back section).

I'm not trying to be a PITA, just curious, where I have retained the stock mid pipe and only use your 2.5" dp and 2.5" muffler delete pipe. Basically these results would tell me wether or not I should:

1) get a 3" high flow cat
2) get a 3" cat back to replace my 2.5" cat back sections

Thanks again,

4-BNGR

What I'm trying to get at is

SO the difference b/n a 2.5" (catless Buschur turbo back exhaust) and 3" catless Buschur turboback exhaust is 2hp and 10 ft lbs.

 

4bangr,

The test you want do is basically a full 2.5" turbo back system? Not going to happen as I don't know anyone that has one.

Your quote:
"SO the difference b/n a 2.5" (catless Buschur turbo back exhaust) and 3" catless Buschur turboback exhaust is 2hp and 10 ft lbs."

This is not correct. We do not offer a full turbo back 2.5" exhaust for the EVO, neither does anyone else that I know of. What you meant to say should have been this, "The difference between a 2.5" downpipe, 2.5" offroad pipe and a 3" catback VS. a 3" downpipe, 3" offroad pipe and 3" catback on a 316 whp car is 2 hp and 10 ft lbs of torque".

Hope this helps.

David Buschur
www.buschurracing.com

 

Yet more testing that we did.

Last I left off at our Stage 2 kit. 320 hp and 329 ft lbs.

I wasn't in a hurry to do cams as when I get to that portion of our upgrades I want to test the 264/264, the 264/272, the 272/264, the 272/272 then some racing cams I have. So the cam testing is going to be pretty involved and take quite some time. I am going to do this testing with the EMS on the car and speed density so I can log and watch what is going on.

Anyway, not being in a hurry to do cams I figured I would throw our standard FMIC upgrade on the car to see what would happen. Now, it is cold as hell in Ohio right now and the gains from any intercooler upgrade I would think will be lower in this weather than on a hot summer day. As a matter of fact these dyno pulls were done with less than 15 minutes between any of them. Most were done with two back-to-back, then as quick as we could make a change and go again for atleast two again. So the car has been abused to say the least. Right now I am on the 209th dyno pull on my new RS. (poor car got the wrong owner!!)

The front end of my car is off as it makes it easier to swap FMIC's and get to the engine bay, the FMIC swap took all of 15 minutes (probably not that long) with the fascia off the car already. This kit uses the stock plumbing in and out or in our case uses our upper i/c pipe kit. The standard kit that we did this test with is exactly the same size and tank design as our deluxe kit, just doesn't use the shorter lower i/c pipe.

First pull I noticed the boost was a good 2 psi higher than before. I had to turn it down just a little. Power went up, 333.5 hp and 339.1 ft lbs. Really pleased with this, that is a 13 hp increase and 10 ft lbs.

As you guys are hoping to plainly see, each and every step keeps increasing the HP and Torque of the car. While many of the parts aren't leaps and bounds higher they just keep adding up.

These peak numbers are actually slightly lower than we saw on our Red 2003 EVO. They have been down about 20 whp comparing the stock cars up until right now where Stg 2 on the '03 was 343 compared to only 320 whp on my RS. Very interesting that the beginning HP and the modified HP are both 20 whp different. Shows that not all cars are created equal. Also explains how some guys get bigger numbers than other with the same parts.

I am very happy with the 333/339 that the Stage 2.5 has put down.

David Buschur
www.buschurracing.com

 

Mr. Buschur,

These are the types of posts that for me makes the difference when deciding whom to give my money to when making a purchase. I think everyone can plainly see that you are devoted to R&D work. You are willing to post the numbers what ever they may be. You even go so far as to point out differences between your own shop cars with the same/similar components trying to show the rest of us noobs how things can very when parts are placed on different cars (regardless if it is the same make/model).

Needless to say, I am currently saving my pennies to purchase your stage 1 .

I just got 299,999 more pennies to go (excluding shipping)!!

 

We are incredible aren't we!? haha More testing that we did....

At this point we are at Stage 2 plus our standard FMIC kit on the car. The car has made 333 hp/339 ft lbs of torque.

The car was pretty happy here, no detonation, straight 94 octane in the car. The car has NEVER had any race gas of any kind in it. It has only had fuel from one gas station in it, Sunoco 94. The 200th dyno pull yielded us the 333/339.

I was anxious to try the alcohol kit on it, not as much as Al was though!! He was dieing to see the results.

I put the kit on, just wire it under the hood, duct tape the controller for it on the windshield next to the boost gauge I have duct taped on the window (not sure what route I am taking with the car yet, so I am not doing anything permanent yet).

We hit the start the dyno pull and start messing with the controller. First I had it on too soon and then a little too late. By dyno run 204 I had it fairly perfect. The controller is adjustable and you can set when the alky starts to come on and when it will max the pump speed out. This makes it so you don't hit the car with a huge amount of alky all at once, this can cause the car to bog. We have also played with nozzle sizes over the last few months and have found what we think is an optimal balance in pump speeds and nozzle sizes. We have also built this kit to take the place of the factory intercooler spray bottle, can't even tell it is on the car really. The MR's don't have this bottle and have to use a "generic" white bottle that can be mounted somewhere else.

Back to the topic. Pass number 204, pull the car and it sounds really good. Get out and look at the dyno chart and I was like WTF? I thought I had the previous non-alky pull up. It made exactly the same HP with the alky as it did without, 333.5 with 335.4 ft lbs. This is what was crazy. The AFR's went from 11.8 : 1 with just the flash all the way down off the scale past 10.9 : 1.

It is shocking that the power wasn't hurt from this super rich condition. It goes to show the cooling/octane power of the alky. Also has something to do with the perfect burn ratio of alky/air compared to gas/air.

I have been tuning these kits on the street with the AEM EMS for a couple of months. Using my butt dyno I felt that leaving the mixture rich wasn't hurting anything. I would tune the car without it, turn it on and then work on timing and boost. Looking at this chart it goes to show that the old butt dyno/street tunes are right on the money.

Next we wanted to try and pull a little fuel out of the mixture and add some timing. By pass 209 Al had the timing up a few degrees and the AFR at its leanest point with the alky on at 11.3 : 1. Still very rich.

The power rose to 345 whp and 360.9 ft lbs. Remember this is with 94 octane, bone stock head and shortblock, NO cams, NO turbo work, has the small hotside as the '04's do.

Pretty incredible I think. Looking at the difference between this car and our red '03 it makes me wonder if that car in the same state of mods would have reached the 365 whp range with just this done. I would have to say it would. That's good as it leaves some room on the table for some of you to beat our numbers I like when our customers put a little butt kicking on what we do, makes us look good

Up next will be the EMS with speed density, more alky testing and cams.

Take care guys,

David Buschur
www.buschurracing.com

 

Cams will be interesting to see (the proper combo, that is). I'm feeling 30awhp increase.

 

Maybe I missed it but what was the boost @ on that run , btw U DA MAN DAVID

 

Wait are you saying these were the first times you actually dynoed your products? Im alittle confused.

 

Subscribed!

 

I was under the impression that all 05's have the larger turbo(larger hotside). Yours is an 05, right?

 

Dave's RS is a 2004

I am looking forward to seeing what it can do with the better 05 turbo or even better the ti wheeled 10.5 hot side turbo that Buschur Racing sells