Just a small reminder dave. i know you are the evo guru and all but i also know how even the brightest of us all often forget the little things. Did you reset the ecu after every mod?

 

I love reading this thread. It excites me and I don't even own an evo.

 

It is testing like this that helps evo owners decide what mods add what type of power. Good work Dave!

 

Thanks. Getting back on the dyno today with some more EMS testing. Then later this week for flash testing. Looking forward to getting busy on this again.

David Buschur
www.buschurracing.com

 

So, we're still in the range of "stage 1" upgrades, and a flash is really needed to avoid fuel cut it seems. As I'm debating a couple different upgrade paths, I'm trying to make sure I have all the information. If I misread something or if I'm WAY off base, somebody correct me, thanks.

 

Or an AFC.

 

I was under the impression there were fuel cuts even with the AFC...but this is where I might have misunderstood...

 

You can, pretty much, get around fuel cut with the AFC and set of larger injectors. While it seems like a "hack" to many people it does work quite well.

The flash on the other hand just shuts the fuel cut off and it cannot be hit at all, which is the best and lets you retain the stock injectors.

On another note. Been tuning the EVO on the dyno with the AEM EMS for the last week on and off. The car is at Stage 2. 94 octane and 19 psi of boost at redline. The car made around 316 whp before with the AFC (don't remember exactly, close enough). After all this tuning using the EMS with all factory sensors and factory MAS the best I have been able to do is 323 at the same boost levels. The curve is improved but the peak has changed very little.

I am VERY anxious to see what we end up getting with the flash. My guess is the HP is going to be the same. I have more things to try with the EMS but at this point with the factory MAS the HP hasn't changed much. NOW, this is on a very safe tune with knock control turned on. Could I make more power without the knock control and leaning on the car, sure, no problem. I am tuning this car the best I can in hopes of supplying maps for use with the factory MAS.

After our flash work is done I want to swap the car over to speed density and see how much difference the MAS makes.

That is all.

David Buschur
www.buschurracing.com

 

keep it up

 

Thanks for the feedback, and it sounds like things are going well. This is the most interesting thread I've followed in a long time.

 

What a completely crazy weekend. I haven't put in that many hours in a very long time. Al and I were working 16 hour days doing flash work and on the dyno trying new things with our RS.

I am so glad he came down (THANKS AL!) We made great gains and now have what I would consider the ultimate tune for all of our Staged upgrades. The smoothness of the power, the driveability and the power are just unbelievable. I am not kidding here, the difference between this and the AFC is like comparing a crack ***** to.....well you get the picture. The flash is what I we will be using with all of our staged upgrades now and we will be offering the AFC as the option instead.

Previously when I started this topic the car dyno'd 237 whp and 250.6 ft lbs bone stock.

With our Stg 0 on the car (2.5 dp, 2.5 axle back, filter kit, boost controller, boost gauge, gauge mount and AFC) the car made 289.3 whp and 279.6 whp.

With the same Stg 0 on the car but tuning with the flash we were able to increase the low end HP and torque substantially and the peak HP ended up at 287.6 and 294.5 ft lbs. Very nice.

This package, as I have said earlier is 100% emmision legal. Uses the stock cat, stock mid pipe and is VERY quiet. Cost on the package is $995. This would easily put an EVO with a good driver into the 12's.

More to come,

David Buschur
www.buschurracing.com

 

On to more information about our results..
Stage 1 went just as good in our testing with the flash.

We went from running the AFR's in the 11.8:1 range (AFC) down into the low 11's with the flash. This makes for a better piece of mind when sending the flash out through the mail.

Previous best for the AFC tune on our Stage 1 (complete 3" offroad system, air filter kit, boost controller, boost gauge and mount and the reflash) we made 316 whp and 296.8 ft lbs of torque.

With the reflash we were able to make the same 316 whp but with an improved curve in the mid range and the torque climbed to 311 whp.

Once again the idle, driveability and smoothness of the flash just blew away what we were getting with the AFC.

I am extremely impressed with these results.

The flash as you guys know is not detectable by the dealer and is a no brainer to install.

Price is the same on both when bought in the Staged upgrade packages. The Stg 1 kit is $1310.

This kit with these numbers should put the car as fast as 12.5's without too much problem. I guess this explains why many of our customers have ran better than our 12.9 we posted 2 years ago.

David Buschur
www.buschurracing.com

 

When the tires started spinning on the dyno - both of the front ones with the RS LSD - thats when it started to get real interesting . . . . thats Stage 2. I'll let Dave tell the story, but with the Stage two and alcohol injection it is sheer madness

 

So it's safe to say that if you "kill the cat" gains are in the 20-26whp range. I wish you did a pull with your 2.5" turbo back (with a cat delete) to compare numbers to the 3". I know, 3" makes more power, but exactly how much more...

I second your compliments of Al's Dynoflash tune. I have his "custom tune" and my car pulls like mad

 

More of our testing results from this weekend.

Last post I left off at Stage 1 with 316hp/311 ft lbs.

We went on to our Stage 2 kit which includes our upper intercooler pipe kit, MAF pipe, battery kit and I used the Forged BOV which is available through us with the kit for the same price as the 1g BOV.

While the HP didn't climb much I was very happy with the torque increase we gained. Much of this I am sure was due to the factory BOV letting some boost slip by when it spikes. Either way this kit sure does clean up the engine bay and makes it easy to get in there and work. Also takes just over 20 pounds of weight off the front of the car.

After our flash the car produced 320.4 hp and 329.8 ft lbs of torque. While just over 4 hp isn't astounding the 18.8 ft lbs of torque was very impressive.

As I have said from the beginning, we did the Staged upgrades so that each part continues to build on the next. As the hp of the car goes up all of these parts make a larger difference in hp. I proved that in the last round of testing when I went backwards to stock parts once the car was producing over 300 whp. The losses were higher than the original gains from adding the parts.

Have a great day,

David Buschur
www.buschurracing.com