I'm not accusing anyone here of anything, or saying anybody is wrong... But here's something to keep in mind regarding mustang and other load based dynos: it is easier manipulate a load based dyno to get a higher hp reading, than it is to manipulate a dynojet.
Again, I'm not saying anyone is wrong or anything like that, but that's just something to keep in mind when considering a load based dyno.
Typically, a mustang dyno and other load based dynos read lower than a dynojet. I did my baseline dyno on a dynojet, and have no clue what I would get on a mustang dyno. It might be true that our mustangs dyno better on a load based dyno, I don't know. I just know that typically load based dynos read lower.
I have heard from a couple of shops that you can get a little more accurate tune on a load based dyno, due to the extra variables you can input. That might be why some mustangs read a little better on a mustang dyno after getting tuned on one.
Originally Posted by CraneGuy
Let me know if I'm out of line and should post as a new thread.
I'm curious about the whole dyno process. I've never done it before. How do you find a place to dyno test a car? How much can I expect to pay? Are there warning signs of a bad dyno shop? Characteristics to look for in a good shop? It seems worthwhile to do a baseline test before I do any modifications.
If I was you, I would look for a reputable shop in your area, possibly one that deals with mustangs a lot. I would find one shop that you trust to do all your work, and only use their dyno. Or at the least, wherever you dyno your car for the first time, I would use that same shop for later dynos. That's really the only accurate way to compare your gains (by dynoing on the same dyno). You can go to one shop that uses a dynojet, and then go next door to another shop that uses the same exact type of dynojet, and you can still easily get readings that differ by 10+ rwhp. Heck, you can go to the same shop and dyno the next day, and get readings that differ. However, at least it's the same dyno, so there's less changed variables.
In my area, most shops charge between $75-$100 for 3 pulls.