Ok guys, just back from the dyno at Collingdale Performance. First of all I'd like to thank Paul at CP for all his help as well as Tillman Speed for all there hard work. The car is far from done, but these numbers are def a good start.
First, the mods

1. Pypes Street-Pro Axle Back
2. UPR Off Road X-Pipe
3. JLT Series II CAI
4. Custom SCT Tune from Tillman Speed
5. Hurst Comp Short Throw ( I love it )

Second, The Numbers-

Max Power - 284 @ 5924rpm/ 98mph
Max Torque - 324 @ 3964rpm/ 70mph

The A/F was a little lean at 14.2 without the cats. Gonna rich it up to about 13.2 and add about 2 on the timing. Once that is done, the thought is anywhere between 290-295 rwhp

He also ran a 1/4 pass on the dyno, numbers -

60' - 1.721378
330' - 5.429654
1/8 - 8.569547
1000' - 11.30303
1/4 - 13.57182

It was his first time shifting the car and he kinda missed the 3-4 shift. If he hit that he said probably low 13's, and with drag radials high 12's. He also said that in a track setting where it is alot more tacky, that would help too. Testing was done on a mustang dyno.

 

That's awesome, nice numbers, I should be right around there to

 

I didn't even know you could do that.

Good numbers.

 

The 1/4 mile pass was awesome the way it was set up. He had a pro tree and everything. Like running the 1/4 mile in place You could set two of those things up next to each other and you wouldn't even need a track

 

Only problem is I would love to see you pull off a 1.72 60' time at a real track. It's quite difficult.

 

Just added some fuel and spark to that tune free of charge, should put him up at around 287rwhp. The AFR average is going to be around 13.4ish. Time for some 4.10's!!!

Agreed about the 1.72 60 foot time, but he also had a 0.65 reaction time. Some 4.10's and a few chassis and suspension mods will make that a much more realistic trap at the track.

 

RubberEaters just got back from Collingdale Performance, with another degree of spark, and another bump in fuel percentage put down 291rwhp and 315rwtq.

Will post charts later!

 

You're comfortable tuning a car at 13.4 a/f, even naturally aspirated?

 

13.4 is borderline high/lean at WOT...both bamachips and brenspeed recommend no higher than between 12.5 and 12.9 at WOT for N/A vehicles

 

My point exactly.......

 

when we tuned mine we tried different afr and 12.8 seems the best. Each run that we do at 13.xxx afr was worse,my tuner told me that the mustang 05 like it more on the rich side.

 

My dyno tuner would agree with keeping it around 13 max.
To be honest, on my car, when we leaned it out past 12.8 or so, we actually LOST power. And the max. we could push the timing was 4 degrees. Any more and it LOST power.
I have experience with PCM tuning on LT1-powered GM cars and in those cars, I know some guys will push it well into the 13's on AFR but I think that can be detrimental to the engine even though it DOES produce more power.

 

The way that it sits right now, it is between 13.0 to 13.1 from 2500ish and up.

I am comfortable with that number.

When it dropped down to 12.7/12.8 on the dyno it lost a few HP... it sits CONSISTENTLY at WOT at 13.050 after 2200-2300RPM.

The timing overall still didnt hit over 4 degrees advanced at any point in the RPM scale. We added less timing from 0-2000 RPM than we did 2000-4000 and 4000-6500.

 

Are you running a Mustang chassis dyno or a Dynojet ?

 

We use Collingdale Performance's Mustang Dyno. It's the in-ground MD250 with the Powerdyne Control and Data Acquisition.

 

Hope this doesn't sound like a dumb question but does your Mustang dyno read the A/F ratio levels on a different scale when compared to as how the standard chassis Dynojet reads them ?

 

The mustang dyno that we use reads the A/F ratio on the same scale as any other chassis dyno would. The only variable that I am leaving out is that on this particular car we used an exhaust probe rather than the bung in the exhaust. Reason being that with this N/A car, EGT was unneccesary, and was much quicker.

With the backpressure factored in, we were reading between the A/F between 2-3 higher (or leaner) than it really is running. If we checked it at the o2 bung, it would probably read around 27-28.

Usually we use the o2 sensors, but this was just 4 test pulls. I will have a video up tomorrow of the dyno. I'll post it here.

 

sounds great, and look forward in checking it out

 

We'll take good care of you. We try and take the out of performance. Ill post that dyno video and pics tomorrow.

 

Thanks again to Collingdale Performance and Tillman Speed!! 13.1 on the A/F is where we found optimum performance. Before we tuned, and without the cats, the A/F was up in the 14.4ish range, made it 8 richer and added spark across the band, no more than 2 in any range. We found that 10 richer brought it down to around 12.7ish and lost 5hp. Where we are at now, there is no pinging or temp increase on the engine. Sounds just the same, and most of all consistent