Buschur tune with minimal mods: 306 whp

[gizmotoy]

This past weekend I made my way up to Buschur to have my X tuned. It was a pretty interesting experience, and watching the session from behind some plexi at a table made from the bumper of an Evo was definitely fun.

The mod list:
Buschur custom tune
AMS short ram intake
AMS dual exhaust catback (on setting 3 of 4, from most to least restrictive)

Result:
Max HP: 306 @ 7000 RPM
Max Torque: 284 @ about 4600 RPM

I picked up about 50 whp over the same configuration without the tune, but I don't have a pre-mod baseline to go from.

A note to anyone tuning this exhaust with an exhaust tip wideband: You must clip the wideband to the driver's side tip if you're not using the wide open setting on the passenger side tip. Otherwise, the resulting AFR returned is garbage in the low RPM range until the engine is forcing enough air through the small opening to fill the gauge. We were seeing ridiculously lean readings down low in the RPM range until we switched to the other tip, which resolved the issue.

David Buschur said a stock X usually puts down around 220 whp or so on his Mustang setup, so I got some pretty good gains I think. It pulls much harder up top, and throttle response is vastly improved. This was the first X he'd done with an intake that modified the MAF housing diameter, so I felt a little bad as I'm sure he had to do a bit of playing around with his standard map to get everything up and running. David really did a great job with it, though, and I pretty happy with the results. For anyone in the area, it's certainly worth the trip up there.

[Clipse3GT]

Very Nice gains, must be much better to drive right now!

[Ultimateone]

Nice gains!

[X Evolution X]

That is prettu much what I have planned for mine.

-Exhaust, BOV, air intake, and tune.

I'm hoping to get something like 315whp which would make it really enjoyable for a daily driver.

[gizmotoy]

It sounded like 306 was pretty high for those mods on this Dyno, so you're probably going to need a bit more kick to get to 315. Of course, if the number is all you want just don't get on a Mustang dyno

I'd spend the BOV money somewhere that'll get you gains. We have people here pushing as much as 32psi through the stock recirc. valve. There's no real need to bother swapping it out, unless it's for sound only... and even then, the stock one is loud with an intake.

[dboz]

How much is a tune and dyno up there?

[X Evolution X]

yeah you might be right. Numbers is actually not what I'm looking for, but rather the feel of when you drive your car after minor mods and feeling the differences!

I'm sure after an Ecuflash, an extra 40-50hp will put a kick in the X.

[gizmotoy]

Originally Posted by dboz

How much is a tune and dyno up there?

I paid $375 + tax (if applicable), which included dyno time and wideband usage. I have no idea if this varies by mod list. I'd give them a call to be sure.

[Raheelq]

nice gains !

[08EVOVA]

nice gains!! I took my X to Buschurs shop for install and tune. Great shop and service but I'm sure you knew that already!!

[dboz]

I think I will head out there in the spring for an intake, the new quiet exhaust and a tune. Hopefully I can get into the same ballpark. I agree, I just a solid kick in the pants. I don't really care what the number is.

How does the car perform over 5k now, especially in first. Mine nose dives there.

[gizmotoy]

My original baseline had some glitches, but I didn't post it. The tuned makes more power across the board, about a stead 20hp more up to about 4.5k RPM. After than the stock tune levels off around 256 all the way to redline while the tuned version keeps ramping up to 306.

So, it no longer falls on its face at high RPMs, and pulls hard all the way to redline.

[dboz]

So how are you liking your tune? Any issues after 3-4 weeks?

[WWGSR]

Nice

[gizmotoy]

Still enjoying it thoroughly. It's insane how much better it feels up top. Mitsubishi is really doing owners a huge disservice with the factory tune.

Not a single issue or code so far.