mods = power loss??
05-05-2009 | 09:04 PM
#61
Registered User
Joined: Jul 2005
Posts: 525
Likes: 0
Fine.
A Ferrari 360 with Capristo Exhaust.
http://www.youtube.com/watch?v=9hwn9Srz1Yc
The engine is already quite tuned up, not too much horsepower gain to be had there, but if I owned that car, that exhaust would be a must. lol. Hope you're a Ferrari fan, then
05-05-2009 | 09:04 PM
#62
Werd. Don't get me wrong, I am a big advocate of aftermarket stuff, N/A or F/I. High RPM power is where it's at, brotha!
When I feel like being a fuel stickler, I do sometimes cruise around and shift at low RPMs, such as the past summer, when gas prices were what, 4.xx. Now...not so much, lol.
When I feel like being a fuel stickler, I do sometimes cruise around and shift at low RPMs, such as the past summer, when gas prices were what, 4.xx. Now...not so much, lol.
05-05-2009 | 09:05 PM
#63
Fine.
A Ferrari 360 with Capristo Exhaust.
http://www.youtube.com/watch?v=9hwn9Srz1Yc
The engine is already quite tuned up, not too much horsepower gain to be had there, but if I owned that car, that exhaust would be a must. lol. Hope you're a Ferrari fan, then
A Ferrari 360 with Capristo Exhaust.
http://www.youtube.com/watch?v=9hwn9Srz1Yc
The engine is already quite tuned up, not too much horsepower gain to be had there, but if I owned that car, that exhaust would be a must. lol. Hope you're a Ferrari fan, then
05-05-2009 | 09:09 PM
#64
LA G Club
Joined: Nov 2007
Posts: 2,233
Likes: 0
From: L.A. Cali
Keep in mind that this is simply a subjective viewpoint and you'll have to accept that some people are willing to put some money into products like aftermarket intakes or headers/exhaust for their own benefit, whatever it may be.
Don't forget that this is also car specific. If you drive a C6 corvette, getting some Longtube headers is a WORLD'S difference in sound and significant power production across virtually the whole RPM band.
Don't forget that this is also car specific. If you drive a C6 corvette, getting some Longtube headers is a WORLD'S difference in sound and significant power production across virtually the whole RPM band.
yeah I don't understand why we can't have a company to come out with a bolt on mod that is exceptional in performance like other cars
I also don't understand why there is only one company ( Stillen) so far, to come out with headers for our cars that I know of at least
I would think they would of had enough time already to come up with more products and better products for us by now
05-05-2009 | 10:11 PM
#65
Registered User
Joined: Jul 2005
Posts: 525
Likes: 0
[/B]
yeah I don't understand why we can't have a company to come out with a bolt on mod that is exceptional in performance like other cars
I also don't understand why there is only one company ( Stillen) so far, to come out with headers for our cars that I know of at least
I would think they would of had enough time already to come up with more products and better products for us by now
yeah I don't understand why we can't have a company to come out with a bolt on mod that is exceptional in performance like other cars
I also don't understand why there is only one company ( Stillen) so far, to come out with headers for our cars that I know of at least
I would think they would of had enough time already to come up with more products and better products for us by now
It's because the VQ37 as it is has been more highly tuned from the factory than say the Vette's 6.0, or rather 6.2 now I believe, Liter engine.
You're already getting 330 chp from a 3.7L V6.
The C6 is a 6-6.2 L V8 that is making 400-420 chp.
The gains to be had from certain aftermarket parts are also mostly determined by exactly how much of an improvement one can get from replacing such a part.
05-09-2009 | 11:38 PM
#67
As it turns out, there is a performance tuning shop within a few miles of me. Place called Static-X Motorsports. They have some big new dyno there, are an authorized Cobb pro-tuner. They charge $50 for a dyno run, and $150/hr to do the custom tune via the Cobb AP. They have not done a G37 so far, but they get business from all over the Southeast. So I think I'll order the Cobb AP from Amplified and then have these guys do the tune. Anybody ever heard of these guys?
10-28-2010 | 11:27 PM
#68
i go off the line at <2300rpm...damn, i go off the line at <1000rpm's...haha people who drive AUTO go off the line at <2300!! yes, most people who drive 6mt will not notice much of a difference since they can rev a tad higher to compensate for the low end loss....well keep in mind, i've had my fair share of knowledge when it comes to modifying cars (since i use to work for an aftermarket company)....i've also had my fair share of track events, autox events, car shows, dyno meets, etc etc etc....so my knowledge isn't just from a piece of paper that a vendor posted...my knowledge comes from thousands of other car enthusiasts..and this is what i have put together based on all their facts and first hand experiences....honestly, i've tried my best to talk people out of basic engine bolt-on's....but i guess people will just have to learn from first hand experience..maybe a few years down the road, u'll think back...oh right, i think gtracing mentioned this to me before...hahaha just wait and you'll see what i'm talking about....
i bought a G37 because i'm broke and this is all i could afford....
i bought a G37 because i'm broke and this is all i could afford....
11-03-2010 | 06:49 PM
#69
Registered User
Joined: Nov 2010
Posts: 11
Likes: 0
Are you serious? If you run lean the ECU will PULL fuel making you more lean than you already are???
If you are running lean the ECU will do 1 thing and 1 thing only pull timming. Since you are already getting all the air you can it will not be able to add air, if it pulls fuel as you state you would worsen an already bad condition and possibly fry your motor, the only option left is to pull back timming.
On a side note running a bit lean will produce more power than running rich so if you add parts that make you run a tad lean you will acctually see some power gains from that. Then once you dyno tune it and correct for the lean condition you could loose whatever you but-o-meter initialy percieved as gains in the performance from said parts.
Dyno results are subjective at best and are not the measure of performance. Different day, different temps, different operator, I have seen a car make a pull, get off the dyno and get back on the dyno an hour later and have as much as 10hp and 10tq difference with no change to anything.
Its really not back pressure that is needed, if that were the case you could high flow everything to the axle then neck down to a smaller pipe out the back and get the pressure up at the end like a garden hose with your finger on it. Its the scavenging of exhaust gas that you loose when you allow too much flow. It sounds stupid "too much flow" but it is the truth. When the exhaust valve opens the exhause gases exit because they are hot and moving to a cooler area, as the exhaust gas cools it begins to move slower. So if you give it a place to go that is too big, it will cool too fast and move slower in some cases too slow to clear the combustion chamber before the intake air fills up the cylinder. In cases like this you rather than leaving you cylinder full of a fresh air charge it has some fresh air charge and some of the spent gas from the last compression cycle. The spent gas that remains will not ignite like the fresh air so you will loose power. Even if it is 99% fresh and 1% spent gas you are still going to take that 1% woth of a hit on your hp and tq.
Trust me I don't care how you drive loosing tq down under 3k will be felt. Even if you launch the car at 4k once you let out of the clutch you will dip below 3k. Don't believe me next time you go to the track put a camera on your tach and watch it after a run.
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