About the exhaust piping so it isn't 3 inch straight through ? I thought originally they told 3 inch exhaust made more power than 2.5 inch. Anyway good feedback Sodaz
The exhaust piping is not 3 inch straight though. Because it's a dual exhaust the 2 exhaust pipes actually add up to 5 inches (2.5 inches each side). If each pipe is 3 inches it adds up to 6 inches which resulted in a loss of top end power according to James.
The exhaust piping is not 3 inch straight though. Because it's a dual exhaust the 2 exhaust pipes actually add up to 5 inches (2.5 inches each side). If each pipe is 3 inches it adds up to 6 inches which resulted in a loss of top end power according to James.
whether you have dual 2.5 or dual 3inch at the rear doesnt change anything... its still gotta go through the entire centre piping (cat converter all the way to the back split) so its not gonna equal 5inch or 6inch unless you use 5/6 inch piping the entire way....
whether you have dual 2.5 or dual 3inch at the rear doesnt change anything... its still gotta go through the entire centre piping (cat converter all the way to the back split) so its not gonna equal 5inch or 6inch unless you use 5/6 inch piping the entire way....
I'm not sure if it does and but that's what James said. He said that when the twin tails pipes were 3 inches (which it was in one his initial prototypes) they measured a lost of power in the top end. When they changed it to 2.5 inches it made more power. He mentioned something about volume and pressure but i don't remember what he said exactly.
BTW, i forgot to mention that the exhaust has a special type of lock joint for extra adjustment so you won't get that lopsided look with the twin pipes.
I'm not sure if it does and but that's what James said. He said that when the twin tails pipes were 3 inches (which it was in one his initial prototypes) they measured a lost of power in the top end. When they changed it to 2.5 inches it made more power. He mentioned something about volume and pressure but i don't remember what he said exactly.
BTW, i forgot to mention that the exhaust has a special type of lock joint for extra adjustment so you won't get that lopsided look with the twin pipes.
i believe that having too big an exhaust loses power... n/a engines do require some back pressure... and i do know cars with dual exhausts (off a single line) are very hard to tune properly for power...
i believe that having too big an exhaust loses power... n/a engines do require some back pressure... and i do know cars with dual exhausts (off a single line) are very hard to tune properly for power...
No, that's because dual exhausts have 2 additional 90 degree bends before the muffler. A single exhaust can run pretty straight from the cat to the muffler.
No, that's because dual exhausts have 2 additional 90 degree bends before the muffler. A single exhaust can run pretty straight from the cat to the muffler.
i was refering more to the debate between whether splitting a single pipe into two and then running two end mufflers is better than just running a single pipe thru a single muffler... but yes thats true, a dual system adds in an extra two bends
Yep i'm here.Good writeup sodaz,pretty much covered it.I was fortunate to actually drive the test car with the extreme kit(many thanks to the owner,sorry i forgot your name).Power is smooth and linear,no vtec"kick"the car pulls hard from idle to 6k.Exhaust is a little bit loud but we had the windows down so i don't know what it's like with them up.intake wasn't as loud as i expected,when it hit vtec there was a low growl for approx.2-3 secs.then it tapered off quickly to virtually stock sounding.I would get the extreme kit if i was keeping the car for 3-4 or more years so you would get some value out of it.I'll be keeping my car only for another 2 and a bit years(it's 18 mths.old already!!) for business/tax reasons.Another bonus is when you drive the car hard you seem to only need to rev it to about 5-6k,there seems to be no real benefit in revving it any higher.Please keep in mind this was a formed opinion in a 10 min.drive.The mild reflash was then hooked up to my car and i took it for a 10 min.spin.I drove the same route as the extreme car as both passenger and driver so as to be able to give me the best possible idea how they both performed.The mild reflash i thought was quite good,again power delivery was nice and linear.The best way to describe the difference is when you drive your car on a cold night you know how responsive it feels,well it felt like that but it was 30c.Personally i'l be getting the mild reflash as i like how quiet my car is(i must be getting old!!)and maybe the Jtune intake or an icebox and that'll be it for me for engine mods.I think that about covers it.If you want to know more please ask.Also thanks to Adrian,James and the other guys for an informative afternoon.
Hey Tony, my name's Jin. I was the owner of the test car. Sorry i didnt get to say bye. I thought you'd left then i saw you in my rearview.
dont forget to mention that the extreme kit and mild kit seem to fix that really touchy accelerator when you have the car rolling in first gear.
Ive got it on my car right now, and i was driving around all night. It got alot cooler at night.. and the car was alot more responsive.
You won't get any much benefit of 3 inch exhaust from I/H/E minor mods only with tuning. They have to go with "real extreme" mods. You have to combine it with aggressive cams combo and higher flow intake manifold, eg RBC or PRC to get the extra power out of 3 inch exhaust.
Single or dual exhaust, well dunno if there is any difference in dyno but single exhaust for sure will create more responsive feeling than dual.
Originally Posted by Chris_F
).Power is smooth and linear,no vtec"kick"the car pulls hard from idle to 6k.Exhaust is a little bit loud but we had the windows down so i don't know what it's like with them up.intake wasn't as loud as i expected,when it hit vtec there was a low growl for approx.2-3 secs.then it tapered off quickly to virtually stock sounding.I would get the extreme kit if i was keeping the car for 3-4 or more years so you would get some value out of it.I'll be keeping my car only for another 2 and a bit years(it's 18 mths.old already!!) for business/tax reasons.Another bonus is when you drive the car hard you seem to only need to rev it to about 5-6k,there seems to be no real benefit in revving it any higher.Please keep in mind this was a formed opinion in a 10 min.drive.The mild reflash was then hooked up to my car and i took it for a 10 min.spin.I drove the same route as the extreme car as both passenger and driver so as to be able to give me the best possible idea how they both performed.The mild reflash i thought was quite good,again power delivery was nice and linear.The best way to describe the difference is when you drive your car on a cold night you know how responsive it feels,well it felt like that but it was 30c.Personally i'l be getting the mild reflash as i like how quiet my car is(i must be getting old!!)and maybe the Jtune intake or an icebox and that'll be it for me for engine mods.I think that about covers it.If you want to know more please ask.Also thanks to Adrian,James and the other guys for an informative afternoon.
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