Dyno with REVO and full exhaust...

[WinterRunner]

Hey guys, went down to Swift Motorsports in CT on Monday, got the Software and had a few dyno pulls. I was suprised though at how low the numbers were... I recall seeing someone on AZ claiming to have 323 WHP? I'm not sure how they managed that with just bolt-ons and software but anyways heres the graph::




Putting about 267ish AWHP down and about the same numbers in Tq. Blue lines are the new numbers w/ the software, green is without. I'm just suprised at how low it is.... esp. for having a full exhaust aAND the REVO software.... Any thoughts? thanks guys.

[KryptoniK]

thats right on the money.... I had about 234 AWHP with revo/full exhaust and k&n filter... depends on the dyno I guess. Remember our cars have a high drivetrain loss percentage. Over the various dyno charts i've seen on here, it's varied from 220 - 293.. and of course that one and only 323.

[cam]

dyno dynamics reads low, painfully low. so estimate your numbers to be close to 300 wheel on a mustang and in the 310ish area on a dynojet.

[WinterRunner]

Ok wasn't sure about all that. Glad to know, because the car sure feels alot more powerful than that! I'm going to try and find a Mustang or DynoJet dyno and get a second set of numbers..... thanks.

[beung]

It has more to do with the improvements rather then the actual final number.

So what was the net gain, about 20 WRHP?

[WinterRunner]

It has more to do with the improvements rather then the actual final number.

So what was the net gain, about 20 WRHP?

About 15 AWHP and 20 AWTQ. Pretty happy with that result considering its a NA motor.... Keep in mind itsa custom REVO map, not the normal one they sell. The guy at Swift spent about an hour fine tuning the software on the dyno...

[Maverick]

time for the Supercharger.
what wheels do you run? if you run lighter forged wheels say 18-20lbs each, you will squeeze more AWHP on the dyno.
Dyno Dynamics is always low, but it reads the correct drivetrain loss %, at least in my case it did.
I see you are in RI, any close REVO dealer up there?

[WinterRunner]

time for the Supercharger.
what wheels do you run? if you run lighter forged wheels say 18-20lbs each, you will squeeze more AWHP on the dyno.
Dyno Dynamics is always low, but it reads the correct drivetrain loss %, at least in my case it did.
I see you are in RI, any close REVO dealer up there?

I went to Swift in Norwich Conn., right near Foxwoods and Mohegan. What is the correct % of DT loss for Quattro? THanks

BTW I run the stock Avus wheels w/ Pilot Sports

[HoRnYTuRbO]

every dyno's gonna read different, you should be comparing your before and after #'s

[Maverick]

between 25%-30% on Dyno Dynamics

[b00st]

this is why i tell people not to compare dyno #s.

the 323...well mike is a good guy...knows a lot. but nobody can hit his numbers. don't remember which dyno. but most people like to go with the inflated dynos to post. not saying mike did or didn't. but when i only see 1 car do it....i have to call it a freak of audi nature.

only thing that matters is YOUR before dyno and after dyno....and hopefully they were done on the same day. which 99% aren't.

[PenguiN]

Yea Im not sure how Bhvrdr got 323, I mean not that hes lying but thats almost 60 more HP with the same mods... Dont forget guys, HP dont mean shit, its 1/4 times and track times that do justice.

[b00st]

Yea Im not sure how Bhvrdr got 323, I mean not that hes lying but thats almost 60 more HP with the same mods... Dont forget guys, HP dont mean shit, its 1/4 times and track times that do justice.

yeah and too bad he has a 13.2 1/4 miles time. again another time that can't be reproduced. good for him. but based on the same mods...nobody else has done a 13.2. i think one other person has a 13.3.

the S4 is just a mid to high 13s car. we must accept that. its a fun to drive car. and so far from my experience. i haven't seen any ETs drop from running people with DPs/exhaust/chip and any combo of those. they have been the exact same as me. which is why i still roll stock.

and going to a track stock...running then getting mods done and running again is not a comparable. too many variables to say anyone had any gains.

i have seen the dynos that prove you gain a lil power...but i haven't seen it translate into ETs yet.

[bhvrdr]

this is why i tell people not to compare dyno #s.

the 323...well mike is a good guy...knows a lot. but nobody can hit his numbers. don't remember which dyno. but most people like to go with the inflated dynos to post. not saying mike did or didn't. but when i only see 1 car do it....i have to call it a freak of audi nature.

only thing that matters is YOUR before dyno and after dyno....and hopefully they were done on the same day. which 99% aren't.

This is absolutely true. My numbers were on the Mustang dyno which everyone claims "read low". But that simply isnt the case. I've been to Mustangs and Dynojets with the same car before and seen plenty of Mustangs read HIGHER hp numbers then dynojets as well as some read lower numbers too. All depends on the dyno. When I dynod on the Mustang it was cooler out and I had been using updated beta programming, had lightweight engine oil in there and a brand new fuel filter. It was good numbers. I've also more recently gotten 295whp on a hot ass day in FL on a dynojet. Just depends on the dyno. Like boost says, all that matters are your numbers on your dyno.

I will say that I have no doubt that adding a full exhaust and programming can gain you a few tenths and a couple mph in the 1/4 mile with no problem, which is very significant in the 1/4 mile world and insignificant to most street daily drivers. I pulled my 13.20 at 103mph in KY in the summer at even a tiny bit of altitude and I could never do that stock. It wasnt a one shot run either. I had more than a few runs all in the 13.2 to 13.3 but my launches were also all consistently good that day. Most people who are running in the high 13s modded are doing it because of less than good launches (2.xx 60ft times) and no mods will make up for that.

Check out the "modified S4" section of this database and you'll see a neat example of three S4 cars that ALL had decent launches with 60ft times within a few hundredths of each other and you get a better idea of what these mods will do. You just can't get within a few hundreths of a second doing street runs and as you can a couple tenths of a second in launching will make a huge difference in 1/4 mile time. If you look at the "stock" one you see the launch (60 ft time) is much worse and it clearly played havoc on the 1/4 mile time of 14.3 seconds that likely would have been a very high 13 second run if just launched correctly.

http://mjbmotorsport.com/sitebuilder...medatabase.htm

cheers! Mike

[WinterRunner]

Thanks for all the input guys.... I think I'm going to get a 2nd dyno with the same mods and compare and contrast the 2. The power curve seems to fit though, and like all you said, its about your numbers... Thanks

[Maverick]

there is a dyno by KTR performance in Ayer MA, you can check it out there.

[WinterRunner]

there is a dyno by KTR performance in Ayer MA, you can check it out there.

What kind of Dyno is it? also where the H is Ayer Mass... lol

[Maverick]

KTR
they use Dyno Dynamics as well otherwise i wouldn't let you go there.
it might be a little far for you.

[WinterRunner]

KTR
they use Dyno Dynamics as well otherwise i wouldn't let you go there.
it might be a little far for you.

Why would I want to go to the same dyno? Thanks

[akitamike]

I know it's somewhat subjective, but for stock 2004 B6 S4, at least one reputable car magazine and testing equipment was able to get a 4.99 0-60 and 13.44 1/4 mile, so some exhaust mods would get you to 13.2 or so?

http://www.motortrend.com/roadtests/...ecs_price.html

[b00st]

thats just magazine racing. most people are between a 13.5 -13.7

[ant7701]

magazine racing.....lol

[bhvrdr]

valid point, hehe. The point being that launch means everything and the pro magazine drivers have no problem revving a 50K dollar car to 7000rpm and dumping it and turning 1.7sec 60 ft times. With that launch lets say it gets you a 13.5 1/4 mile. With that same car if you turned a 2.1sec 60ft time (bad launch) you could run a 14.2 sec or so 1/4 mile time. If you can, when looking at the 1/4 mile times try and compare the times with very similar 60 ft times.

cheers! Mike

[Captain Insano]

So when I searched and saw this discussion - how stout is the B6 S4 6-speed manual transmission? I would love to see what it can do in the 1/4, but am scared to beat on it and drive it like I stole it.

Sounds like I should expect a 14 or so ET with a granny launch then...

[dougyfresh]

One of the best things you can do is go to a dyno day where multiple cars are dynoing. This way you can compare and contrast against various vehicles with the same operating conditions. Hopefully a few are the same as yours to get a really good comparision. I know EPL occasionally does a dyno day sometime in the winter. If there is one this winter I'm bringing my Avant there.

[SuperAvant]

About 15 AWHP and 20 AWTQ. Pretty happy with that result considering its a NA motor.... Keep in mind itsa custom REVO map, not the normal one they sell. The guy at Swift spent about an hour fine tuning the software on the dyno...

Go to Enhanced Street Performance in Sterling MA - They have a Mustang Dyno.

www.enhancedstreetperformance.com

[SuperAvant]

KTR
they use Dyno Dynamics as well otherwise i wouldn't let you go there.
it might be a little far for you.

As far as I know, they have no one to operate that dyno. Their tuning shop has taken a downturn but their motorsports division is in full swing.