Ferrari developed their own automated manual transmission in 1989 for F1 and has used it in several street models including the Enzo. You got me on Bugatti. I assumed that they would use the Ferrari SMT but instead the Veyron uses a DSG by Getrag.

Here's a interesting link:

http://www.autozine.org/technical_sc...ear_manual.htm

I didn't realize how many AMT variants there were or how long they've been around. The first AMT I knew about was the Ferrari F1 variant.

 

Seems like the killer mod in this whole deal is the intake. I just installed a Weapon R Secret Weapon, and I can vouch that it definitely feels better from about 3k-5.5k rpm.

To echo the previous post, I also saw a better WHP dyno for the xB2. I believe Popular Mechanics baselined a 5 speed at 150 hp at the wheels.

I may have mine dyno'd in the next few weeks to see where I'm at.

 

I think the exhaust is a big restriction. The axleback+header didn't do that much because the s-pipe before it wasn't replaced, and neither was the massive (and probably baffled) resonator in between. Actually, since it was the TRD axle-back, it didn't even replace some of the piping AFTER the resonator in the middle. You guys have to keep in mind that crush/pressure bends are easily the most restrictive part of our exhaust and not the diameter. I don't have the proof now, but some calculations have proven that a 2.75 crush/pressure bent exhaust is equal to a 2.25 mandrel bent exhaust. I think our stock exhaust is 2 or 2.25 inch crush bent, so you can see where this is going.

Also, the import tuner one dynoed low because it was an automatic.

 

im in it for fun to drive factor something about a mechanical linkage that makes me happy even though dsg shifts faster its not for me and no lift shifting is the same i loose no boost between shifts dont even lift of the gas pedal do motor never hits vacuum so no bov going off its all apples and oranges i like the control

 

Import tuner, October 2008.
Scion 08 XB RS 5.0 Automatic.
Base Line 125.7 HP / 128.0TQ
AEM CAI +8.7HP / +10.6TQ
TRD Exhaust +1.2 HP / +0.3TQ
Strup Header +5.3 HP/ +0.9TQ

 

If this was towards my post, then I'll say it again like I did above. The exhaust wasn't fully modified. That's why the exhaust didn't help as much.

 

coryjames, every single post you write is just one long run on sentence. Not to hate on you or anything, but it would be MUCH easier to understand if you put some commas or periods in your posts.

 

I've given him isht about that a long time ago, but he's not capable. Deal with it, or ignore his posts.

Talk to the hand, cause Cory's not listening.

 

IIRC the exhaust piping from the resonator assy to the axle-back is 2.5" stainless with mandrel bends, not crush bends. Can't improve much on that. OTOH the stock header/cat has a 2" collector and the s-pipe is 2" to 2.5" (mandrel bent) so a header with a 2.5" collector into a 2.5" s-pipe (W-R) into a less restrictive 2.5" resonator assy with virtually any 2.5" axle-back should add ~10whp for a NA engine. JMO.

Of course, the biggest bang for the buck is clearly a CAI and a less restrictive air intake is clearly necessary for any exhaust mods to provide their full benefit.

 

Oh I'm capable. Its a bad habit i have formed that i hate.

 

As a general note, OEMs almost always do crush bending. It's just cheaper and easier, plain and simple.

But to be specific, I'd like to point out that it looks like the stock header of ours has crush bent piping. It also looks like our "S-Pipe" has crush bent piping. It also looks like the piping from the middle resonator to the back is crush bent. Just take a look under the car. and see for yourself. Mandrel bends have consistent diameter, while crush bends don't. Also, I don't think an OEM would do crush bends in the first half of the exhaust, then go mandrel bends. Hell, I don't think any OEMs do mandrel bends on low-end cars like ours.

 

You're probably right. I was looking for pronounced crush at the bends and didn't see any. If they are crush bends, I've seen a lot worse. Looking at the photo below, it does appear that the s-pipe may have crush bends.