New exhaust mod on my 3is
11-07-14, 03:19 PM
#1
Driver School Candidate
Thread Starter
New exhaust mod on my 3is
hi guys.
I have installed invidia midpipe with the stock axleback.
Now it sounds Great and looks like factory just as i wanted
here is a sound clip.
I have installed invidia midpipe with the stock axleback.
Now it sounds Great and looks like factory just as i wanted
here is a sound clip.
11-18-14, 04:27 AM
#7
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Just ordered mine yesterday and should arrive soon 
After spending $30 to have a local exhaust shop delete my secondary cats, I liked the sound it made. However, I didn't like the look of it so I decided to spend the $$ for the Invidia midpipe ($515 shipped on ebay after making an offer), plus i'll get a true X-pipe versus the stock crossover pipe which really appears to be a bottleneck (it's that box right before the resonators that's approx. an 1" in height). Did you notice any increase in engine responsiveness? I noticed it in all RPM bands with the secondary cat delete, and it's not a placebo to justify my $30 (lol) modification. I'll post a video once installed, but it sounds similar to this video I found of an IS350 with just a resonated mid-pipe
Tanabe dynoed a 2gen IS350 with just a midpipe and got 10rwhp @ peak HP / 6rwtq @ peak TQ, with a gain of 20rwtq in area's below 4,000rpm, where it matters to me. However, there are many who claim it only results in a 1-2hp gain, but those who have compared dyno's already have had axlebacks. Like any combination modification, you cannot add the gains of each mod individually to get a resulting peak figure (example: lets say on a Camaro V8, you gain 15rwhp with an intake ALONE, and 20rwhp with an axle back ALONE, when combined, the gain will not result in a 35rwhp increase)
http://www.tanabe-usa.com/rnd/image....abeT5_Dyno.jpg
After spending $30 to have a local exhaust shop delete my secondary cats, I liked the sound it made. However, I didn't like the look of it so I decided to spend the $$ for the Invidia midpipe ($515 shipped on ebay after making an offer), plus i'll get a true X-pipe versus the stock crossover pipe which really appears to be a bottleneck (it's that box right before the resonators that's approx. an 1" in height). Did you notice any increase in engine responsiveness? I noticed it in all RPM bands with the secondary cat delete, and it's not a placebo to justify my $30 (lol) modification. I'll post a video once installed, but it sounds similar to this video I found of an IS350 with just a resonated mid-pipe
Tanabe dynoed a 2gen IS350 with just a midpipe and got 10rwhp @ peak HP / 6rwtq @ peak TQ, with a gain of 20rwtq in area's below 4,000rpm, where it matters to me. However, there are many who claim it only results in a 1-2hp gain, but those who have compared dyno's already have had axlebacks. Like any combination modification, you cannot add the gains of each mod individually to get a resulting peak figure (example: lets say on a Camaro V8, you gain 15rwhp with an intake ALONE, and 20rwhp with an axle back ALONE, when combined, the gain will not result in a 35rwhp increase)
http://www.tanabe-usa.com/rnd/image....abeT5_Dyno.jpg
Last edited by Loe; 11-18-14 at 06:38 AM.
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11-18-14, 06:44 AM
#8
Lead Lap
I was looking into getting the full catback when I save a little more but I am considering just getting the Invidia midpipe for now and then buy the rest of it when I get enough. Do you think it is worth it to get just the midpipe for now and then upgrade eventually? they gave me a really good offer on the midpipe alone so that's why I was asking. Also, do you have an intake installed and is it a 250/350?
11-18-14, 07:39 AM
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I was looking into getting the full catback when I save a little more but I am considering just getting the Invidia midpipe for now and then buy the rest of it when I get enough. Do you think it is worth it to get just the midpipe for now and then upgrade eventually? they gave me a really good offer on the midpipe alone so that's why I was asking. Also, do you have an intake installed and is it a 250/350?
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