Buschur Racing goes 12.09 at 115 mph
Here are some answers for you guys.
How much boost was it on that pass? I didn't know at the time but this morning when I drove it to work I looked. The boost was actually hitting around 22 peak and would still fall off to 19-20. It was closer to 20 psi this time at redline in 4th gear than ever before. I usually see it dead on at 19 crossing the finish line.
The AFC settings have remained unchanged since before the FMIC install. The car is a little leaner now than it was with the settings we send out, just from the increased air flow though. Like I said, we send the AFC's out tuned but tuned on the safe side so nobody has problems.
Lightweight flywheel? I have seen no gains in using them in anything. The Exedy clutch, flywheel and pressure plate we are running are actually ALOT heavier than stock.
Fuel cut basically happens because the MAF sensor is telling the ECU that there is way too much air coming into the engine. This is also effected by cold weather. The colder it gets the sooner the car is going to hit fuel cut. By installing a larger injector in the car you can use the AFC (or whatever you are using) to get safe AFR's. Since the AFC manipulates the signal from the MAF that the ECU sees the ECU thinks the car has less air coming in. This in turn raises your fuel cut point. Pretty simple really.
What new parts are we running for the new times? We ran the 12.42 at 111 mph last time you saw, I am assuming. Since then we dropped our new FMIC kit in it and ran a 12.26 at 112 mph, then put the HKS cams in and I ran a 12.21 at 113.4, then I put Kevin in the car with an empty tank and his leaner body (about 100 lbs) and a pound or so more boost, he ran a 12.09 at 115 mph.
That's about it, thanks for reading.
David Buschur
www.buschurracing.com
How much boost was it on that pass? I didn't know at the time but this morning when I drove it to work I looked. The boost was actually hitting around 22 peak and would still fall off to 19-20. It was closer to 20 psi this time at redline in 4th gear than ever before. I usually see it dead on at 19 crossing the finish line.
The AFC settings have remained unchanged since before the FMIC install. The car is a little leaner now than it was with the settings we send out, just from the increased air flow though. Like I said, we send the AFC's out tuned but tuned on the safe side so nobody has problems.
Lightweight flywheel? I have seen no gains in using them in anything. The Exedy clutch, flywheel and pressure plate we are running are actually ALOT heavier than stock.
Fuel cut basically happens because the MAF sensor is telling the ECU that there is way too much air coming into the engine. This is also effected by cold weather. The colder it gets the sooner the car is going to hit fuel cut. By installing a larger injector in the car you can use the AFC (or whatever you are using) to get safe AFR's. Since the AFC manipulates the signal from the MAF that the ECU sees the ECU thinks the car has less air coming in. This in turn raises your fuel cut point. Pretty simple really.
What new parts are we running for the new times? We ran the 12.42 at 111 mph last time you saw, I am assuming. Since then we dropped our new FMIC kit in it and ran a 12.26 at 112 mph, then put the HKS cams in and I ran a 12.21 at 113.4, then I put Kevin in the car with an empty tank and his leaner body (about 100 lbs) and a pound or so more boost, he ran a 12.09 at 115 mph.
That's about it, thanks for reading.
David Buschur
www.buschurracing.com
I honestly dont understand why anyone would buy from another EVO vendor???? You produce parts that work very well together, and are very afforadble. I could go on and on about this, but its very simple. You make the best products around. Thanks to you and your crew for everything!!!!!
Newbie
Joined: Sep 2003
Posts: 93
Likes: 0
From: Fallston, MD
Awesome to hear, Dave. I keep reading all this stuff about EVO's at 20 psi or so, and I keep wondering "why don't they just turn up the boost?" I'm used to not worrying about fuel cut though with DSMLink. 
I keep forgetting. Keep up the good work (and if I had an EVO I'd be buying most of your stuff).
I keep forgetting. Keep up the good work (and if I had an EVO I'd be buying most of your stuff).
Congradu***kinglations!!!!!... thats the best time i have seen with those mods....i cant wait to finally install your mas air pipe and my brand new walbro 255 to compliment my 660 injectors... now all i need is a front mount and a dyno flash so i can inch my way to those 11s timeslips... so when is the next shootout??
In Timeout
Joined: Jul 2003
Posts: 486
Likes: 0
From: Penn State University
Ack!...Two more parts to buy before I do my install. (Fuel Pump & Injectors) I can't wait till next summer when I can add your FMIC, 02 Housing and IC Plumbing to my car...
The two mildly modified cars that ran 11's all quite abit more "stuff" than your car + race gas...so thats an awesome time!
The two mildly modified cars that ran 11's all quite abit more "stuff" than your car + race gas...so thats an awesome time!
Newbie
Joined: Aug 2003
Posts: 52
Likes: 0
From: Chicago, IL
Originally posted by Blue Evo 8
Dave,
Kevin weighs 100lbs.???? Darn Thats skinny
And at 127-130 pounds I thought I was skinny
Dave,
Kevin weighs 100lbs.???? Darn Thats skinny
And at 127-130 pounds I thought I was skinny
I think David meant that Kevin was 100lbs lighter than him.
Congrats all around to those sick times, its awesome too see that with good quality mods and tuning (at a very reasonable price) you can practically be in the 11's on pump gas. I'm sure 100 octance would push you into the 11's no prob. The good and bad thing about living in the midwest, cool weather in the fall, which is great for FI cars, but all the tracks close down. Keep up the great work David and friends.
Kevin weighs about 175, I am 200 pounds. The tank was completely full when I ran the car and completely empty when he ran it, that is the 100 pounds.
The car just has 264 intake and exhaust cam in it.
We just did more dyno'ing on the car and came up with 361 and 303 ft lbs just like it was when it ran the 12.09 at 115 mph.
David Buschur
www.buschurracing.com
The car just has 264 intake and exhaust cam in it.
We just did more dyno'ing on the car and came up with 361 and 303 ft lbs just like it was when it ran the 12.09 at 115 mph.
David Buschur
www.buschurracing.com
