Check the TurboTrix forum for details.

https://www.evolutionm.net/forums/sh...d.php?t=101120

 

Just wondering why we cant do this at Alamo. That way if anyone needs to buy a last minute part they can do that instead of at FIS (where it looked like that subaru day) doesnt have anything but a dyno. Just a thought.

 

i think it boils down to the kind of dyno, and im acctually speaking for cody here and he can correct me if im wrong, but i think he perfers a mustang dyno over other brands. i also know that vishnu will not tune on anything but a mustang dyno and we need to create a relationship with fis so we can have vishnu's dyno weekend there also.

i have nothing against alamo, i hear great things about their work and how well they take care of their customers, but here it just comes down to what kind of dyno we're using and since mark is just dyno tuning and not installing parts fis would be a better location.

 

Everything Jason mentioned is correct. The dyno used is critical and a major factor in this case. If you need details on why, PM me.

Also, Mark will install your cams or engine management if you are buying it for the dyno day, FYI.

 

I would prefer the Mustang as well.

 

Actually, I prefer to not tune on a Mustang dyno. I'd rather tune on a Dynojet or much better yet, a Dyno Dynamics load bearing dyno for best results.

just my 2c,
shiv

 

Shiv what do you dislike about the Mustang dynos? I personally don't much care for how they shut down at peak power. Only reason I said I would prefer one is because my last dyno was on one but then again if it isn't going to be the exact same dyno the comparison wouldn't be that valuable I guess.

 

i think it has to do with the smoothing that the mustang does.

 

To my knowledge, there are no Dyno Dynamics dynos in the area. Also, smoothing is a correction factor that can be adjusted. Also, Shiv, could you explain why you prefer DD other than that is what you happen to use and are accustomed to? You can make us all smarter! Thanks!

 

The sampling rate of the Mustang Dyno is pretty poor. Too much info is lost in the process. It's very hard to see knock retard activity, misfire or any other form of abnormal combustion that would could out as clear as day on most other dynos. This is a big deal when tuning turbo engines that run 20+psi of boost. And when viewing the raw data (unsmoothened) there is too much noise (presumably from the dyno itself) that obscures the real data. The multiple roller fixed wheel-base system is also pretty poor since frictional tire loss will depend on where and how the tire sits on/in the real roller assembly.

shiv

 

Thanks for the post. So how does a DD dyno prevent things like tire location from being a factor? Also, I was having trouble understanding why smoothing would be the cause but now I see that it is a sampling issue as opposed to smoothing which is understandable. So in addition to the previous question, what dynos, in order, are the most preferred for tuning by you?

 

Hiya-- the DD dyno has an adjustable wheelbase which means that all the tires are sitting between two sets of independantly spinning lightweight rollers. The front and rear rollers of the DD Dyno are speed matched electronically, not physically with a gian belt. It's more accurate and offers greater resolution that having one entire huge assembly spinning in unity. The more rotational mass you have, the more info you loose.

In terms of dynos that I've used, I'd put a DD first, Dynojet a distant 2nd, Mustang a distant 3rd. DTS and Dynapacks I wouldn't even consider due to prior experience with them. Things may have improved so please don't take my opinion as the truth. Just an opinion

Shiv

 

The Mustang we have been using also has an adjustable wheelbase. However, I don't know if the rollers were electronically controlled or not. So I know your opinion for a dyno on tuning, but what about for accurate, real world numbers closest to an actual street type output?

 

who else in texas has a AWD dyno jet, beside Alamo i will not let brice touch my car, even if he the last dyno in the US. need to find a awd dyno..

 

turbotrix rocks