Dyno Day
 

I was driving around yesterday and one of the local performance part places around here was having a dyno day fundraiser to help pay for a kids medical bills, with all of the proceeds going to the kid. Figured since it was going to a good cause that I would strap the X5 to it.

So here's my dyno chart:

http://farm3.static.flickr.com/2561/...579125ec_b.jpg

Does that mean you are just touching 300hp by the time it hits the tires?

Yep. You usually lose ~ 25-30% in the drivetrain.

I know, those numbers make me feel slow and sad!

300 awhp isn't too shabby

:iagree:

AWD sucks up the power in momentum. Wonder what a 4.4 or worse yet, 3.0 is putting down :(

oh jesus dont say that :bustingup

:iagree:

Me and my 4.4 made it to Taos in 49 minutes effortlessly. Usually takes 1hr 20 minutes. A/C on, listening to Big Bill Broonzy with passenger and cargo. That's enough for me. :p:

Like to see a GT500 do that.:rofl:

Maybe if I pulled 3 of the plugs out I could match that :p::p:

DAM... sounds funny but could be true..

Hmmm. (little wheels in my brain turning) I wonder what the power to the wheels would be in the X5 if we dropped in Wagners modded GT500 engine!?!?!!!_? It may as well be a X5 M/// killer! :rofl::rofl::rofl:

guess
who
was
seen
today
in
HER
gt500
?
?
?
?
?
?
?
?
yup

Hello Kitty! That is a pretty GT500 you drive!

Hmm, could be a nice pairing....605hp/585tq in a 5.4 SC pushed in the X5.....now who has the funds to pull that one off :rofl:

ill pass

Funds? What funds.... But I can do some great shit with a welder! (went throught almost a whole spool of wire just yesterday)

Custom motor mounts, exhaust. swap out the ZF trand for a ford F250 4x4 manual shift, etc. (less refined a trans, but would actually have a manual X5 with a V8)

Hell, while we are at it we might as well give it some side pipes like on an old corvette stingray. :wow:

:bustingup:bustingup

Oh my..

Just for shits and giggles....with the mods that I have done.....Maybe I will get a dyno done... see what my lil' ol' 3.0 could do?!?! :popcorn:

What do you think Jeff....worth it??

Rich:thumbup:

I wish I had dyno'ed it before and after the Dinan stuff installed, just to see what the gains and losses were.

To me it was worth it! For a few reason. 1) It knocked me back down to earth in realizing the X5 isn't a sports car. 2) It was my first dyno event 3) I finally got to hear the Dinan exhaust from outside the car.

I would say do it, if I were you Rich. But if your 3.0 puts down better numbers than me, I may have to go look for a new car! :rofl::rofl::bustingup

sure stinks- took you a few thousands and a dyno to realize it was not a sports car and even want to sell it?:D

The X5 isn't going anywhere! It's a great SAV! Plus I know at 6'8'' I am going to have a rough time fitting into a sports car, unless its an M5, then I will use a shoe horn to get myself into it!

Actually, if I'm reading the graph correctly, the picture is even more sobering than that: look like max whp on the 3 runs was 273....It was the torque that touched 300 ft-lbs, at around 4200 rpm.

On the other hand, you'll see these crankshaft-to-drivetrain losses for just about ANY vehicle, so it's not as bleak as it seems. When talking horsepower, you have to compare apples to apples, not apples to oranges.

Your 4.8is still a beast of an SUV, especially with all the Dinan mods you just threw into it. I think you can easily beat a Cayenne S with your package, and are essentially equal to a Cayenne GTS.

Specs from Porsche website:

Cayenne S = 385 hp @ 6200, 0-60mph = 6.4 sec
Cayenne GTS = 405 hp @ 6500, 0-60mph = 5.7 sec

The BMW company specs on a stock 4.8is are 355 hp (crankshaft), 0-60mph = 5.9 sec.
I would imagine the CAI, exhausts, and throttle body have shaved 1 to 2 tenths off your stock 5.9 time.

There JSears ! Do you feel better now?;)

YES! I do feel better now! Bring on the Cayenne S! Don't know if I want to battle a GTS just yet!

LOL, I just read 25 or so posts about this 300 rwhp X5, wondering how anybody got that off the printout that clearly showed 274 hp, but you beat me to it.

For an AWD vehicle, do they have two sets of dyno rollers measuring at the same time?

There was a front set and a rear set of rollers. How it measures the power output of the car? No idea! :dunno:

I believe you can hang with a manual GTS...the tiptronic is on par with a 4.6iS. A stock post face-lift 4.4i can easily match the current Pepper S.

I guess I could go dyno my completely stock 2004 4.8is w/ 60kmi and see what numbers it cranks out unless there's a difference in the years from 04 to 06. If it's a lot less then maybe I'll start investing into some performance parts! I don't know if it would be Dinan products since I could only see that getting too spendy real quick.

Do you know what gear your X5 was dynoed in?

There's been too many beers and too many numbers gone through my head to where I can't remember what gear!

You won't see a large increase with any performance part unless you go with some type of Force Induction.

Should be zero difference between 04 stock and 06 stock 4.8is, same 4.8L N62 engine in 04-06 X5 4.8is models. But there is a variable which will make it hard to compare to Jeff's test: the dyno itself. You technically would need to test it on the same dyno to draw a sound conclusion. The airflow will be different on different setups, as well as the calibration of the dynoes.

FWIW, Dinan is very rigorous in their dyno testing of the individual mods, so you can get a pretty good idea of the performance gain on each mod just by looking at their website for your specific model. For example a CAI would bump you up roughly 15 hp on a 4.8is, a free-flow exhaust about 8 hp. A high-flow throttle body: another 8 hp. Although these numbers are specific to Dinan mods, I would think any high quality CAI (say AFE brand) and high quality exhaust (i.e Supersprint) will give you comparable gains. Assuming you do the software flash to take advantage of the improved airlfow. All are modest gains, but they add up to + 30 hp or so....you will definitiely feel a difference...primarily in throttle response.

You're right: Dinan is not cheap. The main reason I went with them is it was "one-stop" shopping and headache-free install and tech support. Any problems, you just bring the X back to them.

Wow wait, what force induction options do us 4.8is have? From what I understand there was a supercharger available but it ended with the 2003 4.6is and is not compatible with the 4.8is.
:dunno:

Yeah I agree, not to mention the difference in the type of dynos, altitude, weather, fuel, and overall health of the vehicles. But even with all of these variables, you would think the difference from the gains in mods would show through enough to make a rough gues-timate as to what those gains were.

Like when Dinan says a CAI is aprox 15hp gain are they talking about whp gains? Somehow I doubt it but if it was, 15 extra whp will make my X feel lighter on it's feet! With 30 extra whp that would probably be enough for the butt-dyno to feel the difference too!
I just don't want to pay any money for the ear-dyno. There are a lot of mods out there that make your X sound faster but in reality isn't. Maybe even slower!

The dyno doesn't lie as long as the mods to the car remain the only variable. I was just hoping that I would be able to see the difference in the numbers and take into consideration all the inconsistancies. If nothing else I'll have a base line to start with to measure my gains if I modd.

So far it would have to be custom made; I have talked to a couple places that have said they could do a bit-turbo or a supercharger.

The only "plug-n-play" for the 4.8is that I know of is the VF Supercharger, which is being made for the N62 engine. I spoke with VF Engineering the other week and they hope this winter to have an "official" release date.

They've been saying that for several years now... :confused:

Well, I can always wish.....:popcorn::popcorn:

Having a turbo or supercharger set up fabbed isn't the real hard part. Its the tuning. With the wrong tune you can easily blow your motor. I haven't heard of anyone tuning the X5's engine computer besides Dinan.