johnny_raincloud

I have done some digging on this and it seems as though there are some variables that are not accounted for that are responsible for the lower range numbers.

There are guys on ModdedMustangs.com who are running the stage 1 KB kit and putting down high 400's for RWHP and TQ numbers.
One in particular is running 493rwhp. But I know he has a cammed motor and a custom tune. Running 9psi!

This really has me thinking because I am most likely going the KB route for my 08.

danzcool

The Kenne Bell 2.6 and Whipple 2.3 make basically the same power for the same boost level all other things being equal. So work up the supporting mods to get the number higher, you may have to pulley down to maintain the same boost as the car breathes easier.

tx_zstang

With a manual and if 9 psi was measured, that is indeed low.
But, without knowing the type of fuel (octane number), the fuel pump duty cycle, intake air temp, engine temp, timing, and some other values, we can't really say it is wrong. The tuning may be very safe and conservative.

johnny_raincloud

Mike,

Seeing as how you are running the KB kit...
Does the handheld tuner that has the KB loaded tune offer any adjustment?
I dont expect it to be like a Bama SCT with 3 preloaded tunes and the ability to choose between them via reflash.

With your mention of the conservative tune possibility in Dan's case, I think you may be on point on there. I did recently meet a guy with an 04 KB running similar numbers on a very conservative tune.

dan2073

the dyno conditions are as follows sorry i cant scan the sheet in temp 76.8 , 30.1 in-hg , humidity 43% sae0.98 ? max power 400.68 max torque 365.99 max boost 9.48 the gas i use is 93 octane and i believe the tuner said iat was around 135 during the runs . I beleive the flat panel air filter is keeping the # down as the surface area is much less than the cone type i will be switching when the car comes back out in the spring . The max timing is at 18*

johnny_raincloud

That seems a little high for IAT on the dyno during a 70 degree day.

I would expect an IAT spike in that range if you are sitting in traffic on a 90+ degree day.
I have heard of several people showing average numbers around 120 making passes on the drag strip. Even lower numbers cruising highway.

Hopefully switching to the cone filter makes a difference...

Also seems like you should be putting down higher numbers running 93 octane. I could understand those numbers on 91 octane here in CA with a similar tune.

dan2073

After doing some more reading on the kenne bell site under the ford tech section it shows that they tune at 25* of timing and that cutting down to 19* yeilds 401 hp while 25* yeilds 444 is running this much timming safe ?

sactown

No it is not, especially on pump gas. I run E85 and don't run that much timing. Start with getting the cone filter and retune it if need be, I wouldn't be surprised if you picked up 10-15 rwhp.

tx_zstang

Depends on the person doing the tuning. For example, I have different tunes for all 3 positions, each for a different purpose. The things that are adjustable are things I want to be able to tweak, within reasonable ranges. The tuner guy I work worth knows what I want out of a tune and what I want to be adjustable by me.


Back to the op...at 93 octane and 18* at over 9 psi, you should be seeing higher power. When we were doing dyno tuning on my 11 psi setup, 1* of timing would yield about 10 hp, up to a point, then drop off significantly. We kept peak timing at 18* and lower.

IAT of 135* is probably not affecting power that much, since your timing is still at 18*. The person doing your tune would know at what points timing is getting pulled. While you could run a little higher timing, if you have sufficient fuel, you will gain some power by doing that. But, that's just one factor in the overall tuning picture.