If it's okay, I thought it might be helpful to have a roundup comparison of exhaust systems for the 2.0. Some of the products haven't fully been released yet or the information isn't available, but it can be added as the information becomes available. Just post any piece of info that you know and the post can keep being edited.
Solo:
Mach
Street/race
Race................................273........282 .........240.........248.........25............25. ..........16.............5.........22
Mach with highflow cat
Street/race highflow cat
Race with highflow cat
__________________ GXP Mysterious darkside l ebony leather with red
headliner l sport pedals l A/C l single disc Monsoon XM l chrome l no spoiler, onstar, smokers, or mayo
Ferrari F430/612 Scaglietti - Alfa Romeo 8C - Porche 911 Turbo - Lambo Gallardo Superleggera - Aston Martin Vanquish S/DB9/Vantage - Merc SL 65/SLK 55 - Tesla Roadster - Vette Z06 - Lotus Elise - Infiniti G35 6MT - BMW M3/3 series - classics - Chevy Nova - Camaro - Vette - Dodge Challenger - Pontiac GTO
__________________ GXP Mysterious darkside l ebony leather with red
headliner l sport pedals l A/C l single disc Monsoon XM l chrome l no spoiler, onstar, smokers, or mayo
Ferrari F430/612 Scaglietti - Alfa Romeo 8C - Porche 911 Turbo - Lambo Gallardo Superleggera - Aston Martin Vanquish S/DB9/Vantage - Merc SL 65/SLK 55 - Tesla Roadster - Vette Z06 - Lotus Elise - Infiniti G35 6MT - BMW M3/3 series - classics - Chevy Nova - Camaro - Vette - Dodge Challenger - Pontiac GTO
Is this really a good idea comparing hp differences between different exhauts, on different cars and on different dynoes?
Theres no reason for 1 exhaust to have much higher hp gains then the other when they're all 3", the difference you usually see is most likely the couple % margin of error.
The only difference you will see in gains should be wheather the exhaust has no muffler or a hiflow cat.
If you want to do a comparison of exhausts it should be done on 1 car, in 1 day and on the same dyno, but i doubt anyone would do this.
Every available Option including On*Star
2.5" Stubby Black Antenna
Lil' Chromies
Solstice License Plate Frame (not really a mod)
Norms Fenders
Holes in front bumper from plate bracket (custom)
Solo Hi Flow Cat/ 3in dual exhaust
Kappa Intake
__________________ 2007 Pontiac Solstice GXP-manual transmission- Mean yellow/Black top- all options including 6 cd changer, XM, and chrome rims etc. minus Onstar and smokers package,headliner AND a spoiler
Modifications- custom tinted windows, Short stubby antenna, and personalized labels ------ 3" Magnaflow. HP tuned, Dejon cold air intake- Carbon fiber A-pillar pod with A/F gauge and boost pressure gauge, S/S BOV spring.. more to come soon
And even then the % of difference will not be that much, that is why I was trying to bring attention to the publish Dyno numbers that were a bit inflated compare to the others.
All these systems are going to be very close to one another just go with the one you feel is the one you like the most, or the price point, or the type of material been use.
__________________ Aggressive GXP at $25,995.00 shipping of $600, Manual Transmission.
Options:
Air, $960; Chrome Wheels, $545; PCQ, Premium Package (Leather), $525; Radio, 6-Disc with MP3, $495; Monsoon, $395; Premium Acoustic Headliner, $150; and Sport Metallic Pedals, $115; all totals $29,180.00. No XM/OnStar and NO Spoiler. MODS (RKSport/Magnaflow dual exit exhaust system, K&N filter, Ventureshield.
First 1000. Aggressive with everything, NO XM/OnStar. SOLD
~~~~~~~ NASSOA
Founding member
~~~~~~~
So then what's the point of people always asking for dyno sheets and hp numbers if all the systems are about the same? If indeed all the numbers are about the same then you'd only be deciding between type of metal used, looks, sound, and price. If that is the case, and the numbers are the same, it will make the decision to buy one over the other easier since you are taking performance gains out of the equation. Maybe the differences in performance increases are more important to some than others or maybe they only care about how it sounds. Again, if it's only accurate when all systems are tested on the exact same car, why does everyone always want to see the dyno sheet proof anyhow, since the systems are always tested on different cars. There is what I consider significant differences in performance within just one brand depending on configuration so I'd find it surprising if all the different systems were within one standard deviation of each other. If one system weighs 5lbs less and has 5hp more performance to offer than another system I would consider that when making a decision. So some of the vendors have posted numbers already, what's the big deal with putting them all next to each other, regardless of if they aren't tested on the same car. We're leaving sound, looks, and price out of this.
__________________ GXP Mysterious darkside l ebony leather with red
headliner l sport pedals l A/C l single disc Monsoon XM l chrome l no spoiler, onstar, smokers, or mayo
Ferrari F430/612 Scaglietti - Alfa Romeo 8C - Porche 911 Turbo - Lambo Gallardo Superleggera - Aston Martin Vanquish S/DB9/Vantage - Merc SL 65/SLK 55 - Tesla Roadster - Vette Z06 - Lotus Elise - Infiniti G35 6MT - BMW M3/3 series - classics - Chevy Nova - Camaro - Vette - Dodge Challenger - Pontiac GTO
Location: Rosamond, CA - Home of Willow Springs Raceway
I say list them and everyone can make their own decisions with the info given. I personally like your idea Justice.
__________________
2007 Cool GXP with Darkside Top, 5 spd, Ebony Cloth, Monsoon with Single CD, Sport Pedals, XM, A/C
Mods - Solo Street/Race Exhaust, K&N Drop-in Air Filter, EDAL
So then what's the point of people always asking for dyno sheets and hp numbers if all the systems are about the same? If indeed all the numbers are about the same then you'd only be deciding between type of metal used, looks, sound, and price. If that is the case, and the numbers are the same, it will make the decision to buy one over the other easier since you are taking performance gains out of the equation. Maybe the differences in performance increases are more important to some than others or maybe they only care about how it sounds. Again, if it's only accurate when all systems are tested on the exact same car, why does everyone always want to see the dyno sheet proof anyhow, since the systems are always tested on different cars. There is what I consider significant differences in performance within just one brand depending on configuration so I'd find it surprising if all the different systems were within one standard deviation of each other. If one system weighs 5lbs less and has 5hp more performance to offer than another system I would consider that when making a decision. So some of the vendors have posted numbers already, what's the big deal with putting them all next to each other, regardless of if they aren't tested on the same car. We're leaving sound, looks, and price out of this.
My point is there is not a big difference when it comes to well design exhaust system from vendors as the one's that have been presented to you all.
The problem comes in when different dynos are use and not calibrated properly.
The Magnaflow showed 257WHP with their 3" exhaust system and no high flow cat, big number when you then compare it to the Solo exhaust system at 232WHP, when in reality there is very little difference between the two as far as performance gain, both coming in right about 282 to 287 BHP, and not the 300+ as it was presented.
So yes, SOUND, the way it looks and what materials are use plus how it looks in the car would be more of the deciding point than the Dyno figure IMHO.
Well I think this is my final post on the subject, good luck to all.
__________________ Aggressive GXP at $25,995.00 shipping of $600, Manual Transmission.
Options:
Air, $960; Chrome Wheels, $545; PCQ, Premium Package (Leather), $525; Radio, 6-Disc with MP3, $495; Monsoon, $395; Premium Acoustic Headliner, $150; and Sport Metallic Pedals, $115; all totals $29,180.00. No XM/OnStar and NO Spoiler. MODS (RKSport/Magnaflow dual exit exhaust system, K&N filter, Ventureshield.
First 1000. Aggressive with everything, NO XM/OnStar. SOLD
~~~~~~~ NASSOA
Founding member
~~~~~~~
I understand the variances in the dynoes and such. But my point is, why bother posting dyno numbers, why mention your products numbers, why mention what kind of steel you use or how the exhaust was produced, if none of it makes any difference. Even if the numbers aren't accurate in comparison to each other, these vendors are still posting their published findings and obviously there are many people interested in those numbers since they are asking for numbers and dyno sheets. I mean come on, what would happen if a vendor came along with a performance product and said it was great, but then just posted a sound clip of the exhaust and didn't give anymore information. How many people would buy that product over a competitor with posted numbers and dyno sheets. You know someone is going to ask for them and think it's shady if the vendor doesn't produce. If all I cared about was sound, I probably wouldn't replace almost the entire exhaust system. That's why ricers just put mufflers and tips on, because it's cheaper and changes the sound.
And, LV, if there IS a difference between the published numbers and the numbers a member gets when they dyno the system on their own car, that's okay. Other actual dynoes from members' personal testing can be added to the list under the vendor's published numbers, which makes for an even better comparison, either strengthening or weakening the vendor's claims. It will only generate more discussion if exhaust A with higher published numbers is on one member's car and exhaust B is on another member's car and both members drive each others car and can actually say, "well Joe and I think B is more responsive on his car even though A shows higher numbers from the vendor".
The point isn't to post a bunch of numbers that all look a little different but are actually all equal in practice. They all make good products, and one isn't necessarily better than another just because of higher numbers, if that product has other important selling points.
I don't know, I think it will make for interesting discussion in the future. If it doesn't, and it's a waste, there's no harm done anyway. Posting all the vendor claims is the start.
__________________ GXP Mysterious darkside l ebony leather with red
headliner l sport pedals l A/C l single disc Monsoon XM l chrome l no spoiler, onstar, smokers, or mayo
Ferrari F430/612 Scaglietti - Alfa Romeo 8C - Porche 911 Turbo - Lambo Gallardo Superleggera - Aston Martin Vanquish S/DB9/Vantage - Merc SL 65/SLK 55 - Tesla Roadster - Vette Z06 - Lotus Elise - Infiniti G35 6MT - BMW M3/3 series - classics - Chevy Nova - Camaro - Vette - Dodge Challenger - Pontiac GTO
when in reality there is very little difference between the two as far as performance gain, both coming in right about 282 to 287 BHP, and not the 300+ as it was presented.
Totally agree. If your over 280, you claim 300 hp. Mallet did so at Sema. I forgot his numbers, but theys were about 250.
Quote:
Originally Posted by shabby
Is this really a good idea comparing hp differences between different exhauts, on different cars and on different dynoes?
Theres no reason for 1 exhaust to have much higher hp gains then the other when they're all 3", the difference you usually
