The 224 was with an old tune on the current mods. You REALLY need a tune after any mojor modifications. I was able to hold far more timing and we had to pull a ton of fuel out of it. If you don't live near a shop, drive to one. Mail order tunes aren't going to do you anywhere near the good a real tune will.

 

What octane of gas was your car tuned for? Regular Unleaded or Super Unleaded?

Also, how much did getting the tune cost you?

 

Thanks for the info AB.
My headers are getting installed next week. I installed the intake, DP and exhaust and then had it tuned. Once I have the headers on I will try and go in and have it dyno tuned again.

 

Tuned for 93. And my first tune was $280 and this one was $140.

 

$140 for a tune sounds like a great price.

 

Repeat visits usually drop the price down. I've got a great tuner, too.

 

Good luck man, I hope you're able to beat my time!

 

I was trapping 102.7 last time so we'll see. I might have a set of tires to go on it too

 

do you happen to know what the total timing was?

 

Peaked at 28* if I remember correctly.

 

Awesome! Looks like I'll wait to talk to my tuner and make sure he can pencil me in at the time I install my headers, I was gonna do it this weekend, but it can wait.

On a side note, DTH refunded the deposit money back in my account today, so I'm going to put that towards the tune, rock on.

 

that sounds about right, incredible how stock commands almost 30.

 

AlabamaGuy,
It's unfortunate that you ended up dyno-ing so low. Didn't you put down 267hp with a catback and rockers before? I was hoping you'd be at 290hp. I would have to say that my car is pulling like crazy! I took my buddy for a ride, who has a 91 5.0 and a 89 super coupe and he was amazed! He weighs about 250 so I was amazed too! I know, I need a tune, and I'm sure I'm leaning out. I was tuned before, with just a downpipe and I was super lean. I'm really hoping for 280-285hp but it seems like know mater what we do, we are all stuck at 275ish N/A. Sittingmongoose was stuck for awhile and finally got it right after paying big bucks! I'll get tuned as soon as I get my intake on.
Not trying to be a dick or anything, I was just hoping for a lot more. Your trap blows mine away. On my dyno you'd be about 265-270 with that mph. I was at 238 runing 99.8mph. With your headers and new tune your new trap should be around 103.6.
Keep us posted, and we race cars not dynos right?

 

I was very disappointed. I dyno'd ***/*** with Catless DP and a cutout. The thing is, I gained a **** ton of power and torque under the curve. I gain traction in 1st then break loose again around 40 mph...we'll see how the time slips go but it is so much quicker now I'm amazed. I think something might have been up with the dyno. He said it'd been worked on since the last time I'd been on it so who knows. I do know Henson Performance can put one hell of a tune on a car!

 

Thought you had rockers too?
Here's what I went with and what a frickin difference!
http://www.maxchevy.com/tech/2007/ii_7-rocker-1.html

 

Rockers and LS6 intake are next

 

A new intake should wake these header cars up a lot.

You all now have a much freer flowing exhaust, an Intake, a good Cam, and some new Rockers is where the rest of the power is hiding....

Does anyone have a dyno sheet from their headers??

 

Exactly as expected with headers, shifts the torque curve to the right and (probably dropped some peak torque at the new peak as the cam is not matched to the header flow.)

 

ya its not always about how much you make but where you make the power. These cars are not dyno queens either, they dyno low but can match cars that make more on a dyno.

 

Hey David
I read the article , sounds great. Do you happen to have the part number for those rockers?