Well I had this awesome evo 9 come to the shop for a break up issue and to check out the tune to make sure all was well. Well that ended up turning into a Walbro 400, 2150s, a dual map, and some other cosmetic mods to make the car more complete.



At first I did the pump gas map. I ended up @ 456/379 on pump gas and 30psi. I only took videos of this so here is the video of one of the last pulls

https://www.facebook.com/photo.php?v...type=2&theater

Here is a VD to 6400. Gas light was on so didn't want to risk a lean condition. If torque stayed flat it would have VD'd up around 520 or more.



Put some E85 in it and ended up with 547/461 @ 37ish psi.



This was the VD for it. I know the car stopped making more in the dyno after like 6600 but on the street it looks like we need to rev it out to 8k

 

Very nice #'s. Is this on a mustang or dynojet?

 

Mustang chassis dyno

 

good numbers for a mustang dyno

 

was it in AWD mode?

 

Just a heads up. Your VD numbers are probably a little inflated due to tire size being set to stock. The tires on your personal evo and this evo are way to low profile looking to be a stock tire size.

25.03 is probably the proper tire height which will remove around 15-20whp more from the number.

 

It was in AWD mode lol. If it was in 2wd the numbers would be drastically lower. If you see the not posted on the screen it says to check the mode lol..

When I did this VD the weight of the car was under estimated. I myself weigh 260 and I had a couple other things in the car to add to the weight. I really only use it as comparison anyways and to show how flat the torque and boost curve is on the street compared to the dyno. The chassis dyno numbers repeat no matter what the weight or the tire size is. FWIW the tires on the black evo are 245/40/18s so they are 25.7. Looks like this evo is a little underestimated on the VD. My evo runs 255/35/18 so its inflated. I just found a nice tire diameter chart to make that easier to input everytime.

 

Just for comparison I did the tire difference. This is my evo with no wing and a miata battery. I have a full set of golf clubs and a shoes, along with a 2 10" subwoofers with an amp in the trunk and a full talk of E85. To get an accurate weight I would have to go to the scales before I do a pull which is just not practical.

 

VD has a built in tire diameter drop down menu. No need to use a 3rd party to get the tire diameter settings. You probably seen that now though.

Also for future knowledge:

If your smoothing 1 is say 30WHP higher then your smoothing 6 (maximum) then that is not a valid result.

You want something that doesn't change from more then 10-12whp from 1 to 6 smoothing.

That is a way you can tell if the road you're using is good or not. For the most accurate # take the car to the interstate.

Mustangs usually are 8-13% lower then a dynojet so you already know what it should be doing.

 

Right on man. It is interesting how much better the curve looks in VD vs the chassis dyno. It just keeps pulling on the street.

 

........oh the v.d graph looks a lot better than a actual chassis dyno...im shocked.

 

It isn't unheard of. The streets have a lot more airflow to help with cooling and cooler IAT. The fans on a Dyno can only do so much. Better cooling, better intercooling add a lot of power.

 

I am planning on building a pretty gnarly fan system on the front of the dyno.