STILLEN Exhaust & Gen 3 Intake Dynos - 18hp Each!

semtex · 02-04-2009, 03:05 PM

Quote:

Originally Posted by MaximumPwr

Hey Semtex, how many miles do you have on your car so far? I've got about 1050 on mine and it's really starting to loosen up. HR should be fast revving not high revving. Once I go past about 4000rpm it wants to climb the rest of the way very fast. I'm starting to feel an attachment to this car. lol

I've got a little over 600 so far. I work from home full time, so I don't put too many miles on my ride. I've been deliberately taking long, inefficient routes when I go out just to squeeze in some extra miles.

MaximumPwr · 02-05-2009, 07:44 AM

Quote:

Originally Posted by semtex

I've got a little over 600 so far. I work from home full time, so I don't put too many miles on my ride. I've been deliberately taking long, inefficient routes when I go out just to squeeze in some extra miles.

I work 5 miles from my house so I feel ya. I've been trying to find reasons to take trips across town to visit friends or whatever. Or if I'm at home and need 1 stupid little thing from the store, well the next thing I know I'm looking for my keys and heading the long way to the store. haha

JoeyD · 02-05-2009, 08:31 AM

Quote:

Originally Posted by MaximumPwr

I work 5 miles from my house so I feel ya. I've been trying to find reasons to take trips across town to visit friends or whatever. Or if I'm at home and need 1 stupid little thing from the store, well the next thing I know I'm looking for my keys and heading the long way to the store. haha

I wish I was in that boat. At the rate I'm going I won't have a warranty by 2010. Not necessarily a bad thing...

SiXK · 02-05-2009, 10:53 AM

Quote:

Originally Posted by MaximumPwr

Hey Semtex, how many miles do you have on your car so far? I've got about 1050 on mine and it's really starting to loosen up. HR should be fast revving not high revving. Once I go past about 4000rpm it wants to climb the rest of the way very fast. I'm starting to feel an attachment to this car. lol

obviously I am not Semtex but I have 1181 miles on mine. Just 19 miles before the end of break-in!! WOOHOO. I have not taken it over 4000 rpms yet. Gonna change the oil and let er rip this weekend!

MaximumPwr · 02-05-2009, 11:01 AM

I changed oil this past weekend. I was going to use Mobil 1 but decided to use normal pennzoil 5w-30. I not sure if switching to synthetic is good or bad for this motor.

SiXK · 02-05-2009, 11:16 AM

I am thinking along the same lines, using a normal oil now however I plan to switch to synthetic on the next oil change.

TerribleONE · 02-04-2009, 03:18 PM

nice..

msl82 · 02-04-2009, 09:42 PM

What are the gains for using both Intake and Exhaust together?

18 + 18 = 36 whp gains?

RCZ · 02-04-2009, 11:50 PM

Quote:

Originally Posted by msl82

What are the gains for using both Intake and Exhaust together?

18 + 18 = 36 whp gains?

Doesn't work like that...

nogoodname · 02-04-2009, 10:01 PM

I told ya so it would be developed soon....lol

good numbers, but now it's time for an independent dyno

ssqpolo · 02-04-2009, 10:58 PM

^^ fo sho...18hp off an intake is way above expected...we're seeing high numbers with mods these days. +19hp test pipes, +18 intake, +18 exhaust...what's next? i hope its not too good to be true

MaximumPwr · 02-05-2009, 11:28 AM

Might switch to mobil 1 on my next oil change. Sort of waiting to see what others do first and how it affects or does not affect the engine.

zman1910 · 02-05-2009, 02:33 PM

I would switch to synthetic after 10 - 20k miles given the VQ's "oily" past.

370ZDreamer · 02-05-2009, 04:57 PM

Where's the air fuels? If you do this then exhaust then you end up with a super lean air fuel I would not be comfortable with that. Would need to get it tuned afterwards.

Denny McLain · 02-16-2009, 10:57 AM

Quote:

Originally Posted by 370ZDreamer

Where's the air fuels? If you do this then exhaust then you end up with a super lean air fuel I would not be comfortable with that. Would need to get it tuned afterwards.

Guys

New to the 370 list as I just purchased a new 370Z the end of last week. However, pretty darn salty at hot rodding cars being a former dyno shop sponced racer currently owning the highest hp N/A street driven C4 on the Vetter forum. This particular car has had over 1000 dyno pulls and there is literally nothing stock in the engine. 12.5 to 1 398ci trying 3 different of heads and a dozen different cams to get the combo worked out. Time for a new challenge.

With that said.........In a new learning curve and I'm looking for effective mods and objective independent dyno restults to back up their effectiveness. And.......no, I don't trust any of the shops and yes.....I know the dyno tricks.

I have some issues with this Stillen post. First, they are an old reputible shop and posting individual results from an intake and exhaust is nice; but why isn't the results of both posted?? Something doesn't appear exactly right to me.

Already tried to purchase (if the frickin shop will call or e-mail me back) a set of high flow cat as that makes sense. Will have the car dynoed bone stock for a rwhp and fuel/air baseline. Will install the cats and will post the results.

In looking at the exhaust, I see quite a bit of room for improvement but the stock intake doesn't appear all that bad. So exactly where is the restriction that causes the 18 hp loss??

The stock intake is cold air with twin filters which appear to be more than sufficantly large enough to support 300rwhp plus. After trying three different intake systems on my Vette I went back to a modified stock setup with a K+N filter. The car currently makes over 470 rwhp and has made as high as 480+ with the same modified stock intake.

So where is the objective independent results?? I'm a buyer!! But, ya got to prove it to me.

02-05-2009, 11:16 AM	#6 (permalink)
SiXK Enthusiast Member Join Date: Jan 2009 Location: Orlando Posts: 352 Drives: 09 370Z / 91 300ZXTT Rep Power: 187	I am thinking along the same lines, using a normal oil now however I plan to switch to synthetic on the next oil change. __________________ Magnetic Black 2009 370Z / Pearl Yellow 1991 300ZXTT

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02-05-2009, 11:01 AM	#5 (permalink)
MaximumPwr Base Member Join Date: Jan 2009 Location: Houston Posts: 78 Drives: 2009 370Z Rep Power: 18	I changed oil this past weekend. I was going to use Mobil 1 but decided to use normal pennzoil 5w-30. I not sure if switching to synthetic is good or bad for this motor.

02-04-2009, 03:18 PM	#7 (permalink)
TerribleONE A True Z Fanatic Join Date: Jan 2009 Location: Socal Posts: 10,203 Drives: WOT Rep Power: 5852	nice..

02-04-2009, 09:42 PM	#8 (permalink)
msl82 Base Member Join Date: Dec 2008 Location: united states Posts: 199 Drives: Nissan 370z Rep Power: 259	What are the gains for using both Intake and Exhaust together? 18 + 18 = 36 whp gains?

02-04-2009, 10:01 PM	#10 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1766	I told ya so it would be developed soon....lol good numbers, but now it's time for an independent dyno

02-04-2009, 10:58 PM	#11 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 269	^^ fo sho...18hp off an intake is way above expected...we're seeing high numbers with mods these days. +19hp test pipes, +18 intake, +18 exhaust...what's next? i hope its not too good to be true

02-05-2009, 11:28 AM	#12 (permalink)
MaximumPwr Base Member Join Date: Jan 2009 Location: Houston Posts: 78 Drives: 2009 370Z Rep Power: 18	Might switch to mobil 1 on my next oil change. Sort of waiting to see what others do first and how it affects or does not affect the engine.

02-05-2009, 02:33 PM	#13 (permalink)
zman1910 Enthusiast Member Join Date: Nov 2008 Location: FL Posts: 361 Drives: 2011 Audi S4 Rep Power: 430	I would switch to synthetic after 10 - 20k miles given the VQ's "oily" past.

02-05-2009, 04:57 PM	#14 (permalink)
370ZDreamer Base Member Join Date: Jan 2009 Location: Florida Posts: 22 Drives: 370Z Rep Power: 18	Where's the air fuels? If you do this then exhaust then you end up with a super lean air fuel I would not be comfortable with that. Would need to get it tuned afterwards.