Chassis #111 2006 STi with Blouch 2.5XTR First Drive Video

[STiPWRD]

Congrats on getting it up and running!

I assume that the extra length on the STI front axles didn't cause any problems? I am just about to drop my transmission in and I'll be using those same axles with the stubs changed over.

Jeff, what's your plan for changing the stubs? You're planning on using a wrx 5 speed with sti axles right?

[sponaugle]

Jeff, what's your plan for changing the stubs? You're planning on using a wrx 5 speed with sti axles right?

I am using the STI axles with the STI Rear Stubs (outer), and STI Front Inner Stubs. I had my 5 speed converted to accept stubs by Andrewtech during the buildup.
Jeff

[Kurk818]

Looks about right to me, but without units on the boost plot and knowing what fuel is being used it's tough to say.

We had one on our dyno last week and really didn't see a huge increase in power over an AWD application. It was maybe 5% higher if i remember correctly.

Tony

The tune is based on 91 Octane from Safeway

Tony - Do you see an issue with dyno numbers for a RWD car performed on a 4WD Mustang Dyno?

[Kurk818]

I am using the STI axles with the STI Rear Stubs (outer), and STI Front Inner Stubs. I had my 5 speed converted to accept stubs by Andrewtech during the buildup.
Jeff

Jeff - Yes, i used the STI axles as you described. I ended up adjusting my links so i have at least a 1/4" lateral travel in the axle to ensure there was no binding.

[sponaugle]

Jeff - Yes, i used the STI axles as you described. I ended up adjusting my links so i have at least a 1/4" lateral travel in the axle to ensure there was no binding.

Awesome. Great to see your car making noise! I may have to come up and see it in person.

[Kurk818]

Awesome. Great to see your car making noise! I may have to come up and see it in person.

You are more than welcome to. Working on mounting the passenger seat in.

Im also going to attempt to install and integrate the STI center console. It looks very promising.

[Scargo]

I am not trying to insult anyone's intelligence. You asked.
An excerpt from this technical article by Stoptech:

Factors that will increase front bias		Factors that will increase rear bias
Increased front rotor diameter		Increased rear rotor diameter
Increased front brake pad coefficient of friction		Increased rear brake pad coefficient of friction
Increased front caliper piston diameter(s)		Increased rear caliper piston diameter(s)
Decreased rear rotor diameter		Decreased front rotor diameter
Decreased rear brake pad coefficient of friction		Decreased front brake pad coefficient of friction
Decreased rear caliper piston diameter(s)		Decreased front caliper piston diameter(s)
Lower center of gravity		Higher center of gravity
More weight on rear axle		Less weight on rear axle
Less weight on front axle		More weight on front axle
Less sticky tires (lower deceleration limit)		More sticky tires (higher deceleration limit)

[Turn In Concepts]

The tune is based on 91 Octane from Safeway

Tony - Do you see an issue with dyno numbers for a RWD car performed on a 4WD Mustang Dyno?

I have no issues with it per se. The dyno could just be decoupled though to run just the rear.

Tony