oregun
04-22-2005, 01:21 AM
So I finally got my exhaust installed. I don’t have any picts under the car, but I’ll post up some engine bay shots of the Kspec GT Header. I'm reposting 2 “off-car” photos.
The exhaust system is as follows:
Kspec GT header
2.5 inch Hi Flow Cat
2.5 to 2.25 inch transition (and this is where the downstream O2 sensor is.
30 inch perforated core resonator
2.25 inch mandrel bent piping
2.25 inch mangaflow muffler
My initial impressons. It’s loud. I’d say 3 times louder than stock. I was shocked when I started the car and it was idling at 1200 rpms. I jumped out of the car and walked to the back to listen. Did I mention that it’s loud?
The guys that installed everything were oh so proud of themselves. The installer had his arms crossed over his chest and chuckled, “It’s deep. Real deep.” And he’s right, the tone is beautiful, rich and deep. It’s just loud.
Now, let me put out a disclaimer. I’m not a big fan of exhaust noise. It’s actually about twice as loud as I would have wanted and I’m brainstorming about a solution. There were about 12 other customers at this shop and all of them thought it was the ****, so maybe I’m just weird/picky. If there are any other Elantras in Chicagoland or the North Shore with any exhaust modifications, hit me up with a PM. I’d love to listen to your cars for comparison.
With the hood up, there isn’t any extra sound from the engine bay. Visually, the headers are pretty trick. In order to add extra primary runner length, the headers come up and forward before heading towards the back of the car. I had to install a slim fan to clear the flange. (Another person on Rdtiburon.com mentioned that he had to cut his fan and there was some initial melting. We started cutting the fan, but came to realize that by the time we would make it fit, it wasn’t going to work anymore. I guess EXD’s have less room up front then even the older tibs.) 80 miles later, the cermaic coating on the headers is still shiny and silver, and no CEL.
http://nitrousworld.com/pictures/Headers%20014.JPG
http://nitrousworld.com/pictures/Headers%20015.JPG
http://www.nitrousworld.com/pictures/gtheader1.jpg
http://www.nitrousworld.com/pictures/gtheader2.jpg
http://www.nitrousworld.com/pictures/gtheader3.jpg
http://www.nitrousworld.com/pictures/gtheader4.jpg
http://www.nitrousworld.com/pictures/gtheader5.jpg
Okay, driving: At normal idle, there is hardly a difference in sound inside the car. Blip the throttle and (I have the hatchback) the exhaust pulses deeply from the back of the car. Did I mention that I think it’s loud?
Rev to 3800 and drop the clutch. Woah. There’s a difference. (Besides the all the extra noise.) My TCS light was going nuts, and I have the Qualfie LSD (and stage 3 clutch w/ light weight flywheel- 215/50R16 Kuhmo ASX on Volk TE-37’s). That didn’t ever happen before. So I tried a few more times, and now I definitely have a benchmark for launching differences.
Rolling acceleration is also different. That surge of power around 4000 isn’t there anymore. I’m not saying that I lost power up high, in fact, I noticed that my 1-2 and 2-3 shifts come much quicker (I missed them the first few times.) I think I gained a whole bunch of torque from 2500-3500 rpms! The power is strong and linear and when I’m crusing at 60-70 MPH, I’m barely on the gas. I did notice, that around 5800 RPMs, where the engine starts to choke, there was a slight raspy sound and the loss in torque seemed more noticable. Maybe I’ll have to get that 268 degree intake cam afterall.
Overall, I’m happy with everything. I won’t make it to the dyno for a few weeks because I have stupid finals for stupid med school, and I haven’t even installed the Emanage. I’ll definitely put the results up when I finish.
Hey ford, if you want to resize these picts, feel free.
The exhaust system is as follows:
Kspec GT header
2.5 inch Hi Flow Cat
2.5 to 2.25 inch transition (and this is where the downstream O2 sensor is.
30 inch perforated core resonator
2.25 inch mandrel bent piping
2.25 inch mangaflow muffler
My initial impressons. It’s loud. I’d say 3 times louder than stock. I was shocked when I started the car and it was idling at 1200 rpms. I jumped out of the car and walked to the back to listen. Did I mention that it’s loud?
The guys that installed everything were oh so proud of themselves. The installer had his arms crossed over his chest and chuckled, “It’s deep. Real deep.” And he’s right, the tone is beautiful, rich and deep. It’s just loud.
Now, let me put out a disclaimer. I’m not a big fan of exhaust noise. It’s actually about twice as loud as I would have wanted and I’m brainstorming about a solution. There were about 12 other customers at this shop and all of them thought it was the ****, so maybe I’m just weird/picky. If there are any other Elantras in Chicagoland or the North Shore with any exhaust modifications, hit me up with a PM. I’d love to listen to your cars for comparison.
With the hood up, there isn’t any extra sound from the engine bay. Visually, the headers are pretty trick. In order to add extra primary runner length, the headers come up and forward before heading towards the back of the car. I had to install a slim fan to clear the flange. (Another person on Rdtiburon.com mentioned that he had to cut his fan and there was some initial melting. We started cutting the fan, but came to realize that by the time we would make it fit, it wasn’t going to work anymore. I guess EXD’s have less room up front then even the older tibs.) 80 miles later, the cermaic coating on the headers is still shiny and silver, and no CEL.
http://nitrousworld.com/pictures/Headers%20014.JPG
http://nitrousworld.com/pictures/Headers%20015.JPG
http://www.nitrousworld.com/pictures/gtheader1.jpg
http://www.nitrousworld.com/pictures/gtheader2.jpg
http://www.nitrousworld.com/pictures/gtheader3.jpg
http://www.nitrousworld.com/pictures/gtheader4.jpg
http://www.nitrousworld.com/pictures/gtheader5.jpg
Okay, driving: At normal idle, there is hardly a difference in sound inside the car. Blip the throttle and (I have the hatchback) the exhaust pulses deeply from the back of the car. Did I mention that I think it’s loud?
Rev to 3800 and drop the clutch. Woah. There’s a difference. (Besides the all the extra noise.) My TCS light was going nuts, and I have the Qualfie LSD (and stage 3 clutch w/ light weight flywheel- 215/50R16 Kuhmo ASX on Volk TE-37’s). That didn’t ever happen before. So I tried a few more times, and now I definitely have a benchmark for launching differences.
Rolling acceleration is also different. That surge of power around 4000 isn’t there anymore. I’m not saying that I lost power up high, in fact, I noticed that my 1-2 and 2-3 shifts come much quicker (I missed them the first few times.) I think I gained a whole bunch of torque from 2500-3500 rpms! The power is strong and linear and when I’m crusing at 60-70 MPH, I’m barely on the gas. I did notice, that around 5800 RPMs, where the engine starts to choke, there was a slight raspy sound and the loss in torque seemed more noticable. Maybe I’ll have to get that 268 degree intake cam afterall.
Overall, I’m happy with everything. I won’t make it to the dyno for a few weeks because I have stupid finals for stupid med school, and I haven’t even installed the Emanage. I’ll definitely put the results up when I finish.
Hey ford, if you want to resize these picts, feel free.