K20iVTEC

Not trying to be rude but maybe you should watch more than just the first 2 min of the video

s2000Junky

Hey I watched 2/3rds!

riceball777

In my 15 years of modding cars I have dynoed on churches dyna pack probably over 10 times. I have also used dyno jets and other dyna packs other than church. In my opinion dyna pac hub dynos do not read higher than Dyno jets. Only churches dyna pac reads abnormally high. Why I don't know. But keep in mind that he is next to the beach so he's at sea level.

s2000Junky

My dyno reads usually about 90% lower then most, but its just a tuning tool so totally doesn't matter Some people are interested in seeing how much power their car makes and will pay good money to see it, and I will take the money certainly, but then just remind them its not important when they start to ask questions, because tuning tool

michaelnyden

If we take that scenario with the mazdaspeed 3 as I mentioned previously, and use an example s2000 at 240whp on a well calibrated dynojet in the same city as the church's dynapack, same day, etc. Then you are looking at 261.84 at Church and ~280-282 at the crank.

takchi

For reference, Church Dynapack numbers:

240hp = Stock CR
255hp = CR + Berk 3" Headerback (Catless) + tune (91ACN)
166hp = Stock BRZ 4th Gear Pull
172hp = Stock BRZ 5th Gear Pull


Same day, EAS Dynojet numbers:

210hp = Stock CR
220hp = CR + Berk 3" Headerback (Catless) + tune (91ACN)
166hp = Stock BRZ 4th Gear Pull
173hp = Stock BRZ 5th Gear Pull


Hard to say what's causing the discrepancies, but we should note deltas rather than absolute numbers when working with the dynos. When working with deltas, percentage is much more realistic than actual difference in values.

michaelnyden

Wow you can see the ap2/cr was certainly underrated from the factory as we've all known, just nice to see it confirmed one more time. 210 at the wheels is definitely more than 240hp.

I have read in a few places on the internet that the EAS dynojet reads lower than expected perhaps due to location (altitude) vs others? or being hotter in Anaheim vs Church being close to the water as well as the other dynojet in the torrance area which dynos ap2 at 220whp stock.

MorngWoodStewie

Not that it's all relevant but ddtech doesn't muster in Honda cams. Very knowledgeable Co. Making real cams (per application) if your running a .5 mile circle track your engine might dyno less then another but at the same time run better times all day against the other, just .02 another good Co. Is webcams. These Co. Specialize in cams and will make you a cam for exactly what u want, not this "race spec" one all be all cams. Ya they'll give you a bump in the right direction but we're talking about winning at that point.

spdracerut

Ya know... I wrote an article way back in the day about dynos and why you shouldn't compare between them. What does matter with a dyno is that it's consistent, repeatable, and precise (different than accurate).

http://www.motoiq.com/MagazineArticl...lieve-One.aspx

I dyno'd my S2k at Church when I did a KPro install on my car. Dyno'd at 238hp completely stock on Shell 91 octane. Then after the KPro install and Church tuning it, it put down 247hp. Are the absolute values of 238hp and 247hp important? Not really. What is important is the 247/238 = 1.0378. So if I got 210whp on a Dynojet stock, I'd expect about 218whp after the KPro install and tune.

http://www.motoiq.com/MagazineArticl...ter-Power.aspx

Anyway, based on the numbers of various cars I've seen at Churchs, I'd say his dyno basically gives off crank hp numbers.

Mrsideways

Wow, BRZ on local dynojet with Header, intake, exhaust, underdrive pulleys, and race gas tune made 176whp.