New Corsa Track Exhaust installed.

[TacDoc]

Absolutely the easiest system I have ever installed. Start to finish 2 hours. The new exhaust is comprised of one assembly for each side of the car (I was shocked to see how much pipe I removed with the stock system). The alignment front to back was dead on, and up down positioning was a snap. Interior heat is non existent, and the sound is perfect. Idle is deep and vibrant, there is no notable increase in cabin noise at cruise, but step on it and the note is deeper, very throaty, and aggressive. Under throttle the system is quite bit louder than stock. I will make a sound clip if someone can host it. Send me an email to send it to. Corsa did this one right.

 

[Skip White]

No more crossover??? If so, do you still have a good pulse in exhaust,like I've said before,the old RT-10 cars did have a nice pulse, much to quiet though. I really would like to get rid of the crossover,but have yet to hear of anyone doing it. Did you get rid of the sec. cats? You'll really here some sound, less heat and a bit HP no doubt.

Please weigh the oem system, and then check with Corsa to see what the weight of the new system is,shipping weight is often wrong. So many of us want to know what kind of weight savings there is. What was the cost of the system? I know of four SRT's I could talk into this if we could get a group buy going.

 

[TacDoc]

Skip,
No more crossover is correct. The exhaust note is great. I know this sounds stupid, but the note reminds me of my friends HD softail. I have a Belanger/RT Cat/Corsa 3" on my GTS, and this system sounds better. At throttle it is not quiet. The secondary cats are still there. Even though I did not weigh the parts, the entire track system was lighter to carry than the two OEM mufflers. I bought the system from JonB at PartsRack.

 

[SMHOD]

Greg,
Does the manufacturer claim any horsepower increase with the system?

Scott

 

[SylvanSRT]

forget claim, has anyone tested this mod as a stand alone change and then dyno tested. i have heard there is quite a bit of weight to save by loosing the crossover.

 

[treynor]

Greg - I'll host your sound clip. Send it to [email protected] . I'd love to hear how this works out.

 

[TacDoc]

I seem to remember JonB saying Corsa claimed an increase, I do not remember how much. I can say the 4000 and up RPM range does not feel restrained now. Before I changed the exhaust the car seemed constipated for lack of a better term when the RPMS were climbing above 4000, now it feels free. Treynor, I will make a clip and get it to you Tuesday.

 

[treynor]

I wouldn't be surprised if the HP change is minimal. The exhaust is not particularly restrictive on the SRTs. Ported heads, headers, high-flow cats, and tuning seem to be the keys for significant gains.

However, I'm very eager to hear how it sounds!

 

[JonB]

Greg,
Does the manufacturer claim any horsepower increase with the system?

Scott

Yes, 2 cars dynoed, 20 and 22 HP. Sidepipe kit only. OE cats !

Crossover system 7-12 HP

 

[GR8_ASP]

Jon, does that mean approximately 8 to 15 hp to eliminate the crossover alone (with other Corsa components)?

 

[Hisserman]

Is it not possible that going from stock Gen I or II headers to a 3" cat back system can actually REDUCE horsepower? See the Exhaust Theory article at http://www.zenfire.ws/hotrods.htm JonB, it looks like your dyno says otherwise. How about others with direct dyno experience?

I'd love to see an article in VIPER magazine comparing the horsepower gains on the same car from the various popular cat back systems. It that too practical a tech article to ask for?

 

[Hisserman]

Some people haven't been able to get the link above to work. If it doesn't work for you then either copy it to your web page address line or type it in there. When the page comes up, then scroll down to the Exhaust Theory article.

 

[SMHOD]

Yes, 2 cars dynoed, 20 and 22 HP. Sidepipe kit only. OE cats !

Crossover system 7-12 HP

Jon,
I assume the dyno was on SRT-10s without any other changes. Is the manufacturer willing to release the dyno results to this forum or by request?

Scott

 

[JonB]

Corsa will Email PartsRack the backup dyno sheets, but Corsa will not post 'sales pitches' directly here. I will try to post them, skills-challenged, but here is the scoop direct from Corsa on a 2003 bone stock with stock filters and cats. Stock = Stock.

Per CORSA: DynoJet, and then Install Sidepiper Track Corsa and 4 hours later dyno: Gained 20.2 HP and gained 23.1 LbFt


On the full crossover system, the several dyno runs he could not immediately locate were 7-12 HP and this is their claimed.

 

[Hisserman]

You've got to respect Corsa for not wanting to get into an unmoderated bragging match on the respective merits of various systems. On the other hand, it's good to hear that there are solid hp gains. That's to be expected from a quality outfit like Corsa.

 

[Frank 03SRT]

Take those claims with a grain of salt. The one for the GTS was supposed to yield 18.7HP. For me it was about 5-10HP. Did the Corsa on two different GTSs with very similar results. I'll bet the same is true for this one.

However, I'm still interested.

 

[SylvanSRT]

can it be made from titanium? i think corsa makes the titanium exhuaust for the Z06? and save a few more pounds,

 

[TacDoc]

Frank, If I gained just 5-10 hp thats fine. The bigger benefits to me were the awesome sound, the way the SRT should have sounded from the factory, and the tremendous reduction in heat. I recorded the exhaust tonight. I will digitize it and email to Treynor tomorrow.

 

[Skip White]

I'm very interested in the sound, all other benifits will be great to, including a weight reduction, even though it's somewhat rear weight. I wonder what HP increase comes from removing the sec. cat? This really improves sound and reduces heat.

Can't wait to hear the sound. I'm hoping to hear cylinders firing in harmony on each side.

Skip White

 

[JonB]

NO WAY is it Titanium. Add $900, avaiulable late in 2004 MAYBE. But Corsa said that about GTS and never built it. 30% chance.

The lost weight is amid-ships. The crossover is a base-board-space heater behind the rear seats.

Lose weight vs OE crossover(~22 lbs)
Lose heat (110-125 degress per Corsa, 125 degrees at PIR)
Gain HP 22 , vs 10 for crossover
Cost $100 less.
Costs $20 less to ship
Easiest to install
Need more pros?
In stock at PartsRack.......as is most anything else VIPER!

 

[GR8_ASP]

No more pros needed. Only thing I need to do is hear one in person as I am a little afraid of the same sound as the RT/10. Not bad but the SRT with crossover sound is a little smoother. Though this comparison is mine back-to-back and the RT/10 is much louder.

But I do have to kid you a little about the rear seats in the Viper mentioned. Mine only came with 2 fronts. Did I forget an option

 

[JWALK35]

Ron if you ever get south of chicago you can come listen to mine .Doesn't look like I'll be driving it anytime soon with this crappy weather. Jim

 

[Hans Christian]

what happened to the sound file - just anxious to hear the outcome

 

[TacDoc]

Treynor, I emailed you the sound clip, sorry about the delay. Please host. I noticed while doing the clip that my tach no longer jitters above 4500 rpm like it did with the stock system. Whats up with that?

 

[treynor]

Hosted at http://www.treynor.com/corsatrack.wav

Sounds very nice!

 

[GR8_ASP]

Sounds good. Somewhat similar to mine which uses Dynamax bullet mufflers and no cats. Big question is where is the microphone. Also, is the crossover still in place or is this with the crossover removed? If removed the sound on one side may be quite different then from in front or behind.

 

[TacDoc]

Viper SRT. This system has no crossover. In order to provide what I thought was the best recording the car was in my driveway, warmed to operation temp, both doors open, with the microphone on the center console.

 

[GR8_ASP]

Thanks Greg.

When driving with top down and windows down do you hear the 5 cylinder sound similar to Gen I's or is it less perceivable? I ask because the increase in evenness to the exhaust is the only reason I can think of to keep the crossover.

 

[JonB]

The only time you really hear only 5 cylinders is from a side-drive-by.

Drivers/passengers are sitting between the outlets, so you hear the full V-10. The 'stereo balance' is that you hear more of the drivers side when the top is down. The passenger heasrs more of that side. But your 'exposed' ear is wind-affected and the inside ear is not !

Just get the Sidepiper ! MOney back if you dont like it. Beat THAT !

 

[GR8_ASP]

Jon, my questions are after 9 years of RT/10 experience so I have some idea what the RT/10 sidepipes sound like. My SRT, with catless flow through Dynamax mufflers, does have a better quality of sound than the RT/10 with the same style mufflers. I don't know how much of that is attributed to the crossover. But that crossover is restrictive and heavy so would be a good thing to remove. As long as it doesn't bring back the UPS sound.