2006 Mustang GT Manual Convertible FBO Dyno Results

[MustangMark]

Just like Henry Ford said… you can have any color you want, as long as it’s black!

Haha, black on red, my favourite combo

 

[GriffX]

I’m somewhat disappointed with the results of the dyno tune.

Just to understand, you did a log file run, send it to Bama and got a revised tune?

 

[Dino Dino Bambino]

Haha, black on red, my favourite combo

Mine's the reverse but I do have black stripes on red.

 

[MustangMark]

Mine's the reverse but I do have black stripes on red. View attachment 116932View attachment 116933

My close second favourite!

 

[MustangMark]

Just to understand, you did a log file run, send it to Bama and got a revised tune?

It was tuned on a dyno at a professional shop local to me. I asked for the log file and they essentially talked me out of it lol. They’re good guys, but probably used to people coming in and questioning their work after reading stuff on the internet. I don’t know, honestly the torque number is great, hp seems right on. It drops to 300 hp at 6k and then worse from there, but that’s about the max rpm I shift at anyways.

 

[GriffX]

It was tuned on a dyno at a professional shop local to me. I asked for the log file and they essentially talked me out of it lol. They’re good guys, but probably used to people coming in and questioning their work after reading stuff on the internet. I don’t know, honestly the torque number is great, hp seems right on. It drops to 300 hp at 6k and then worse from there, but that’s about the max rpm I shift at anyways.

Because it was written in the diagrams, that's why I asked. I'm not familiar with dyno runs, I usually do 70-120 kmh or 80-160 kmh runs and compare to cars with similar HP. A BMW 335i has 305 HP and I have similar values and the BMW has bi turbo with better torque range.

 

[JC SSP]

Dyno runs are just a data point. Good for baseline and tuning but they can get expensive and depending on the dyno could impacts results.

Quarter mile run (MPH & E/T) and knowing the vehicle weight is much more accurate.

 

[StockishS197]

It was tuned on a dyno at a professional shop local to me. I asked for the log file and they essentially talked me out of it lol. They’re good guys, but probably used to people coming in and questioning their work after reading stuff on the internet. I don’t know, honestly the torque number is great, hp seems right on. It drops to 300 hp at 6k and then worse from there, but that’s about the max rpm I shift at anyways.

Dyno tunes are great and I’m sure the tune is fine, but Lito’s tunes are magical. There are very few true 3v masters these days and he’s one. I spent about 6 months learning and tuning my own car and got it about 9/10s of the way there, but it’s Litos last 1/10 of the way that makes it special.

If you are even somewhat doubting the tune, it could be worth having Lito send you a tune and doing remote logging with him.

 

[TexasBlownV8]

An On3 turbo would be an obvious next performance upgrade

yeah, but that's a slippery slope: once you do, you'll never go back to n/a!
Good n/a numbers there, nice t/b, too

@MustangMark not a bad result, though. You know how different the car feels. Don't get obsessed by the actual numbers, enjoy the car as it is, or as you tweak it. I've been dissapointed too many times to worry about dyno numbers; as long as the car runs great, I'm happy.

+1 on Lito tuning being the best on these 4.6's, whether n/a or with f/i

 

[MustangMark]

Here it is. Top picture is stock, bottom picture is ported.

View attachment 116931

Notice how I feathered the top edges of the bores and blended them with the center divider to streamline airflow. The result was an even sharper part throttle response and the car's a lot of fun to drive.
An On3 turbo would be an obvious next performance upgrade but I'm already more than happy with the engine N/A.



My WOT spark timing advance maxes out at 30 degrees but my Brenspeed tune is for 91 octane. On 93 it would have been 32 degrees.

Looks great. Did you use a dremel?

 

[GriffX]

Looks great. Did you use a dremel?

You could cut off the upper halve of the shaft which holds the blade. But I remember that the TB was not a choke point?

 

[Dino Dino Bambino]

Looks great. Did you use a dremel?

Yes I used a dremel with a carbide cutter, and then switched to sanding rolls to give the surfaces a smooth finish.

You could cut off the upper halve of the shaft which holds the blade. But I remember that the TB was not a choke point?

A process known as half shafting where you cut away one half of the shaft where the throttle blade is screwed into place in order to increase the cross-sectional area of the throttle opening. However this is only effective when the throttle blade is wide open, and you run the risk of the throttle blade working loose because the holding screws only have half a shaft to bite into. Not a good idea!

 

[GriffX]

run the risk of the throttle blade working loose because the holding screws only have half a shaft to bite into. Not a good idea!

Done this on 2 cars, 150.000 mi, no problem at all, the bolt threads are only in the lower half. And, of cause only an advantage for WOT, like any porting/polishing. Picture from Stiegemeier. And usually you cut it off without taking the shaft out so the blade is still fixed/clamped.

 

[MustangMark]

Dyno tunes are great and I’m sure the tune is fine, but Lito’s tunes are magical. There are very few true 3v masters these days and he’s one. I spent about 6 months learning and tuning my own car and got it about 9/10s of the way there, but it’s Litos last 1/10 of the way that makes it special.

If you are even somewhat doubting the tune, it could be worth having Lito send you a tune and doing remote logging with him.

I didn’t know you could do remote, that’s cool. I assumed he was in the states.
I’ll look into it, thanks!

 

[MustangMark]

Done this on 2 cars, 150.000 mi, no problem at all, the bolt threads are only in the lower half. And, of cause only an advantage for WOT, like any porting/polishing. Picture from Stiegemeier. And usually you cut it off without taking the shaft out so the blade is still fixed/clamped.
View attachment 116956

Wow that looks good! And likely beyond my abilities haha

 

[MustangMark]

Consider some rear end gears (3:73 or 4:10) you might be surprised how well that moves that Convt GT.

I have thought about it. My concern is I highway drive a lot, and heard it makes 1st gear very short. I thought 3.73 or 3.90 might be a good compromise, but then guys have reported not noticing a difference with 3.73 lol

Seems like trial and error is needed to find what you like

 

[TexasBlownV8]

373's are a reasonable option for both highway and 'fun improvement'.
But, if you are wanting optimal MPG (with th bolt-ons, that's probably not the case), sticking with stock gears is your best option. 355's are another alternative, but not as big of a difference. I like and use 373's in my 4.6L; MPG isn't that great, but it's fun. With very similar bolt-ons, highway with 373's on cruise doing 75, I'll get around 23 mpg; this is with a Lito tune.
Around town, well, the heavy foot keeps MPG lower than it could be

 

[Dino Dino Bambino]

But, if you are wanting optimal MPG (with th bolt-ons, that's probably not the case), sticking with stock gears is your best option. 355's are another alternative, but not as big of a difference.

His car is a 2006 GT manual so it should have 3.55 axle gears as standard like my car. From 2007-2009 Ford fitted 3.31 axle gears to improve highway fuel economy.
IMO with near full bolt ons and stock cams/intake manifold, 3.55 axle gears are the perfect set up.
Once you add aftermarket cams the picture changes 'cause you're then shifting the torque band higher up the rpm scale. Same also if you install an aftermarket intake manifold.

 

[MustangMark]

373's are a reasonable option for both highway and 'fun improvement'.
But, if you are wanting optimal MPG (with th bolt-ons, that's probably not the case), sticking with stock gears is your best option. 355's are another alternative, but not as big of a difference. I like and use 373's in my 4.6L; MPG isn't that great, but it's fun. With very similar bolt-ons, highway with 373's on cruise doing 75, I'll get around 23 mpg; this is with a Lito tune.
Around town, well, the heavy foot keeps MPG lower than it could be

Yeah I’m not concerned about MPG as much as how high I’m revving while cruising at 140 km/hr which is basically flow of traffic on the 404 (Toronto highway I take to work). I think I’m already doing about 2,700 rpm, wouldn’t want to be sitting over 3k.

It does have stock 3.55 gearing. If I was just blasting around town and country roads 4.10 would definitely be fun lol, but for an all rounder 3.55 is pretty good. Will always wonder what 3.73 would be like. My 3.5 ecoboost f150 came with 3.31 and it feels like it doesn’t have the 0-60 pickup of others I’ve driven, but the thing is a great on the highway.