2005 S4 - Supercharger Upgrade? Help!
02-03-2010, 10:01 AM
#11
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"To keep it short though i would avoid a S/C unit for this platform until a more efficient unit is used"
That won't happen, why put R&D money into an older platform? We should be glad for the little we have from PES and VF. But I am going to go the lightweight route first...forged wheels, alcons, DP's and exhaust and GIAC....I estimate saving close to 60 or so pounds of weight,losing weight or adding HP....same thing except no torque gains of course. Losing weight at wheels is really good for unsprung weight and less rolling and turning inertia.
That won't happen, why put R&D money into an older platform? We should be glad for the little we have from PES and VF. But I am going to go the lightweight route first...forged wheels, alcons, DP's and exhaust and GIAC....I estimate saving close to 60 or so pounds of weight,losing weight or adding HP....same thing except no torque gains of course. Losing weight at wheels is really good for unsprung weight and less rolling and turning inertia.
http://www.euroaddiction.net/forum/s...ight=exclusive
click this video
02-03-2010, 10:55 AM
#12
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Well said bro.
why bother? I know 5 people who have had the same dyno numbers to disprove this statement. Dyno means jack for a blower attached to this platform. ALl (VF + PES) M90 supercharged cars are showing dynos in the 450-500 crank hp range (350-415whp).
Yet...when they are run down a quarter mile track they're performaing exactly like 420 crank hp RS4s...which weigh 100 lbs more than the MT6 S4. I can only assume that Joey is correct...go read that thread he linked for a real eye-opener.
Further, JHM modified cars are running the same quarter mile times as the supercharged VF and PES cars. Does that mean JHM's bolt on parts are making the S4 a 500hp killer? Not likely. It means that JHM's bolt ons are delivering about the same power as the supercharger kit (i.e. 2.5" downpipes/2.5" Fast Intentions catback/JHM tune and a few lightweight bits like rotors and crank pulley.
Save your money.
Yet...when they are run down a quarter mile track they're performaing exactly like 420 crank hp RS4s...which weigh 100 lbs more than the MT6 S4. I can only assume that Joey is correct...go read that thread he linked for a real eye-opener.
Further, JHM modified cars are running the same quarter mile times as the supercharged VF and PES cars. Does that mean JHM's bolt on parts are making the S4 a 500hp killer? Not likely. It means that JHM's bolt ons are delivering about the same power as the supercharger kit (i.e. 2.5" downpipes/2.5" Fast Intentions catback/JHM tune and a few lightweight bits like rotors and crank pulley.
Save your money.
02-12-2010, 08:54 AM
#13
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Ok...so my numbers are in. But before I get to them, my car is absolutely incredible with the Supercharger. It feels like this is how the car should have been designed in the first place. You must test drive a 4.2 s4 car with the SC and see for yourself! Give the guys at 303 motorsports a call, they did a fantastic job! Anyway, please note that all of my numbers were taken on a conservative dyno at about 5600ft in elevation. So there is about a 15% loss right off the bat...take another 24% loss from crank to whp and here we go:
All tested with 91 octane crappy Colorado gas.
Before SC:
217 WHP
286 HP
After PES STAGE 1 SC
288 WHP
360 HP
That a 71 HP increase at the wheels.
So, if you adjust +/-15% for altitude
Thats
331 WHP at Sea Level
414 HP at Sea Level
Other Factors:
Cleaned the carbon out (Thanks to the crappy 91 octane gas here in Colorado)
Mileage = 80,000
Other mod = Catback AWE exhaust
All tested with 91 octane crappy Colorado gas.
Before SC:
217 WHP
286 HP
After PES STAGE 1 SC
288 WHP
360 HP
That a 71 HP increase at the wheels.
So, if you adjust +/-15% for altitude
Thats
331 WHP at Sea Level
414 HP at Sea Level
Other Factors:
Cleaned the carbon out (Thanks to the crappy 91 octane gas here in Colorado)
Mileage = 80,000
Other mod = Catback AWE exhaust
Last edited by nitro1; 02-12-2010 at 09:48 AM.
02-12-2010, 11:10 AM
#14
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Do you have any 1/4 times for the car? You should share your information here...
www.euroaddiction.net
We have a lot of talk on superchargers and it would make for some more good conversations.
www.euroaddiction.net
We have a lot of talk on superchargers and it would make for some more good conversations.
02-12-2010, 01:48 PM
#15
"Do you have any 1/4 times for the car? You should share your information here.."
I'm more of a backroad touring driver, 1/4 mile is not too important to me. If it was I'd go back to bikes or get a GT500 Shelby. Which I may do anyhow or get a Z28 Camaro if they make it. I can get a blower on my 05 B6,or just get new one from the factory with 4 years warranty. Or wait 2 years and get a CTS-V used.
I'm more of a backroad touring driver, 1/4 mile is not too important to me. If it was I'd go back to bikes or get a GT500 Shelby. Which I may do anyhow or get a Z28 Camaro if they make it. I can get a blower on my 05 B6,or just get new one from the factory with 4 years warranty. Or wait 2 years and get a CTS-V used.
02-15-2010, 07:47 AM
#16
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good stuff
you should do some pulls with some bolt on S4s in your area to see the gains overly lightly modded cars. Try johnnyalqaeda in colorado springs...he has a full exhaust and will have a JHM tune soon.
p.s. did they ice down the manifold when they did your dyno runs?
you should do some pulls with some bolt on S4s in your area to see the gains overly lightly modded cars. Try johnnyalqaeda in colorado springs...he has a full exhaust and will have a JHM tune soon.
p.s. did they ice down the manifold when they did your dyno runs?
03-02-2011, 12:32 PM
#17
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I have a 2005 S4 I have apr downpipes and a fast intentions no cat's 2.5 I just ordered the pes stage II s/c I'm in newhampshire I'll post some videos of pulls before and after on the road so we can see the difference in power and if the s/c can maintain the power after driving for a few hour's I hope this helps......and I hope I didn't waste my money
I did how ever get a smoking deal from tony at pes so no complaints 
I did how ever get a smoking deal from tony at pes so no complaints
03-07-2011, 06:14 AM
#18
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I have a 2005 S4 I have apr downpipes and a fast intentions no cat's 2.5 I just ordered the pes stage II s/c I'm in newhampshire I'll post some videos of pulls before and after on the road so we can see the difference in power and if the s/c can maintain the power after driving for a few hour's I hope this helps......and I hope I didn't waste my money I did how ever get a smoking deal from tony at pes so no complaints
I did how ever get a smoking deal from tony at pes so no complaints I hope you didn't waste your money either
p.s. go quarter mile the car to get a good comparitive look at how it's performing.
cheers
03-31-2011, 06:03 PM
#19
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You guys really should have done a little more homework on this supercharger business. JHM is cooking up a supercharger kit for the B6/7 and I have only seen good things from JHM. I have been going the light weight route as well and it seems cheaper and more beneficial in my opinion.
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