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

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.

370ZDreamer · 02-17-2009, 01:00 PM

Quote:

Originally Posted by Denny McLain

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.

I agree, I need more proof too, and to the guy who said air/fuels will remain the same. Take a look at the dyno's done so far of exhaust components. The air/fuels did not remain the same, and coming from a tuning background in Ford's myself, that is what I would have expected.

par4bmw · 02-17-2009, 09:05 PM

If it comes within 20% of its claims I am in

Scribe · 02-17-2009, 09:56 PM

Denny's run?

02-17-2009, 09:05 PM	#4 (permalink)
par4bmw Enthusiast Member Join Date: Jan 2009 Location: Scottsdale, AZ Posts: 267 Drives: 09 370 M6 Touring/Sp Rep Power: 447	If it comes within 20% of its claims I am in __________________ I tellya what, its got this s-mode thing down here...it moveees so incredibly... http://www.youtube.com/watch?v=Q7JsL...e=channel_page

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02-05-2009, 04:57 PM	#1 (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.

02-17-2009, 09:56 PM	#5 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 222	Denny's run?