CMDV and DS NO DIFFERENCE

[BFHvette]

I have 05+ Mustang 5spd with JLT+SCT,Hooker headers+X, Borla cat-back, Steeda pulley.

The problem when i installed Steeda Charge Motion Plates+SCTreflash and Spyder Driveshaft.
What is the expected result

First run

Last run

NO DIFFERENCE

1200$
0000000000

What did you think the reason??????

 

[surf808]

Whoa that sucks. What it on different dyno days?

 

[Charlie Sheen]

6.8k RPMs?

 

[TexStang]

I think its been noted before that the spydershaft may not really show up on a dyno

 

[thump_rrr]

A mod that frees up rotating mass will not show up on the dyno results but the car will accelerate quicker.
As for the charge motion plates was the car tuned for them because I saw a 2/10ths of a second difference with them on my friends car.

 

[spyder7724]

I think its been noted before that the spydershaft may not really show up on a dyno

yeah the most we've ever seen is 8-10hp on a dyno and that was a bone stock auto. It's at the track where the drop in rotating weight really makes itself known.
I didn't notice too much by installing the CMCV deletes either but mine wasn't dyno tuned after the install. I'm sure if we did we may have found a few hp with the CMCV delete swap.

 

[GRAYPNY]

I would be willing to bet that if you hit the track with those 2 mods you would see an improvement in your e.t.

 

[BFHvette]

The other differences were dyno transfer to another workshop with different person,Oil old,new Autolie HT1 spark plugs And problem appeared to link.
http://www.s197forum.com/forum/showthread.php?t=4962

In run 299rwhp was with 95 and the run 301.13rwhp was with 100 ??????
The difference between 95 and 100 2horse.

 

[Slofoot]

Even the temperature and humidity on different days will affect the dyno numbers.

 

[spyder7724]

I agree the weather from day today can really affect dyno#'s and each dyno is calibrated differently and each brand dynos all read differently. I dyno'd 281hp on one then 296rwhp on another with no other changes and the weather was pretty consistant during both sessions. Imagine if i had used the latter dyno first then followed it up with a 15rwhp loss on the other one.

 

[andyman]

I would be willing to bet that if you hit the track with those 2 mods you would see an improvement in your e.t.

I'd bet he doesn't take it to the track though, which would be unfortunate if I'm right.



Both those mods yielded a lower e.t. for me

 

[US-1]

*Ahem*

DYNOS DON'T WIN DRAG RACES.

Go to the track and see what happens.

 

[ZmanM3]

*Ahem*

DYNOS DON'T WIN DRAG RACES.

Go to the track and see what happens.

But dyno sheets are so much easier to read then time slips.

 

[don_w]

But dyno sheets are so much easier to read then time slips.

Not to a lot of people...

 

[ZmanM3]

Not to a lot of people...

But all those squiggly lines are so much fun. I think the time easier myself though.

 

[ChevyKiller]

In all honesty, if he has doesn't go to the strip and has no intention of doing so, I would have spent the money elsewhere.