Dyno Improvement w/Kooks LT's, H-Pipe

[RC_Stang]

Got Kooks 1-7/8" LTs and Off-Road H-Pipe installed about 10 days ago. Made 2 dyno runs after. Keep in mind the car is NA, but I did not go with 1-3/4 because I will be putting on a Roush at the end of the year.

First Graph (First run vs. 2 years ago after first tune). Picked up about 15/15 across the entire curve, but more noticeably picked up around 35TQ at 3700 rpm ( I could have told you that when after I drove it )



Made a cam timing adjustment and got the next pull (and left it there). Negligible drop in HP and slight inc in Tq, but gained another 5 tq at the bottom end. Ever so close to the 400, but still feels great:









Couple of clips...on the dyno, at at home next morning during cold start up (inside and out of car)

http://www.youtube.com/embed/IO63AZ7TRtA

http://www.youtube.com/embed/cu8evvrz2Ro

Other mods are Steeda upper/LCA w/relo bracket, 3.73s, Steeda CAI/custom Dyno tune, and some other stuff.

Thanks
RC

 

[char259]

Looks good, I would have thought a tune and headers would have pushed you past 400 rwhp.

 

[bigwilly43729]

Vurrrry nice. Now I want to get a dyno pull, but I'm scared I'll start chasing numbers.

 

[RC_Stang]

Looks good, I would have thought a tune and headers would have pushed you past 400 rwhp.

Well I started way out at 340, and keep in mind that these are a little larger than should be for NA. I think 1-3/4 would have. Also a humid day in the 80s. In addition, it's an Auto with heavy 20" tires and 3.73 gears.

Vurrrry nice. Now I want to get a dyno pull, but I'm scared I'll start chasing numbers.

For me, Im not about "chasing numbers" for bragging...I like doing these dynos to get an idea what parts to you car, then I can help others out that might want to know. This is neat because we always say that you cant simply add the HP gain from each component:

2+2+2+2= 6.

It's the collective co-op of the parts.

Bottom line for me now is 1) car is ready for the Roush and 2) it feels great down low and sounds awesome.
RC

 

[Seer]

Looks good, I would have thought a tune and headers would have pushed you past 400 rwhp.

I've seen tune only cars go over 400. His dyno reads low.

 

[Rob72]

I've seen tune only cars go over 400. His dyno reads low.

Yeah. Usually around 425 sae on Dynojet

 

[mikeyfitz]

You have a very low dyno lol. Stock I threw down 382. I put down 463 now. (Which may be a little high.)

 

[D98GT]

A little? lol I'd say VERY. Which Houston dyno reads that high?

 

[mikeyfitz]

A little? lol I'd say VERY. Which Houston dyno reads that high?

I definitely wouldn't say very lol. I've seen many in the 445-460 area with same mods lol.

Slaters


Sent from my iPhone 5 using Tapatalk

 

[BleedinBlue]

Whats up with American Muscle's baseline dyno of 337/325 for their bolt on "build up" for a '11 5.0?? With a tune/CAI and TB and o/r X they only hit 381/359.

 

[mikeyfitz]

Low dyno lol.