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Old 08-25-2012, 07:47 PM   #2751
Celery GT-5
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Quote:
Originally Posted by xluben View Post
I don't know if people realize, but video like the 3 I posted in the review probably takes me 2-3 hours of setup, shooting, and editing. The full review like the one for the exhaust is probably 8-10 hours (spread over a bunch of days) to get all the photos, videos, text completed, and to get it all formatted and ready to post.

I got most of the silencer video done, so hopefully I'll be able to finish it up here soon before I'm off again.
I realize it takes a lot of time because I'm friends with a photographer and he won't just snap a pic without setting up for the right light and then spending a bunch of time sorting through and editing the shots afterwards. As opposed to the rest of us who just auto upload pics to photobucket and slap them on the internet.

still sounds pretty good with the silencer in btw
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Old 08-26-2012, 04:17 AM   #2752
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Lol I love how after the revs it goes dead silent. Hmmm well I'll have to seriously give this some thought since its so cheap for a noisemaker. I just don't know if I can do without the quads.

Thanks for the update!
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Old 08-26-2012, 10:12 AM   #2753
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Hey Ben,

In the most recent video I noticed something that has the potential to be annoying. It looks the mid pipe for the Greddy might contact your white line endlink stabilizers. Does it touch rattle or bang at all? It sounds about as quiet as the SPT with silencer in, does it feel like it loses some umph with it in? Good review and data as usual!
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Old 08-26-2012, 01:23 PM   #2754
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Originally Posted by Jdub.csu View Post
Lol I love how after the revs it goes dead silent. Hmmm well I'll have to seriously give this some thought since its so cheap for a noisemaker. I just don't know if I can do without the quads.

Thanks for the update!
Yeah, it definitely doesn't look as nice as the quad tips.

Quote:
Originally Posted by erik11876 View Post
Hey Ben,

In the most recent video I noticed something that has the potential to be annoying. It looks the mid pipe for the Greddy might contact your white line endlink stabilizers. Does it touch rattle or bang at all? It sounds about as quiet as the SPT with silencer in, does it feel like it loses some umph with it in? Good review and data as usual!
The exhaust clears the Whiteline components by a lot. At least an inch in all places. No issues there. The closest point is near the forward most exhaust hanger, but I haven't had any issues at all.

With the silencer it is at least as quiet as the SPT. It does seem like it lost a little power, but I noticed that the boost is down by 1.5psi and the AFR's went half a point more rich. Maybe with tuning it would come back up to a little better level...
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Old 08-26-2012, 01:41 PM   #2755
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Quote:
Originally Posted by xluben
Yeah, it definitely doesn't look as nice as the quad tips.

With the silencer it is at least as quiet as the SPT. It does seem like it lost a little power, but I noticed that the boost is down by 1.5psi and the AFR's went half a point more rich. Maybe with tuning it would come back up to a little better level...
I think most of that is due to us having a quad cutouts.

Well if you do tune it and it comes back keep us in the loop (not like I have to ask really since you will)
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Old 08-26-2012, 01:52 PM   #2756
Celery GT-5
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quad tips are so tacky..lol. At least the single look purposeful
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Old 08-26-2012, 05:50 PM   #2757
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Quote:
Originally Posted by Jdub.csu View Post
I think most of that is due to us having a quad cutouts.
Quote:
Originally Posted by Celery GT-5 View Post
quad tips are so tacky..lol. At least the single look purposeful
I'm not really sure if a fart can looks "purposeful". Most race cars are obviously going to be straight pipes, so they usually don't look very fancy.

Quote:
Originally Posted by Jdub.csu View Post
Well if you do tune it and it comes back keep us in the loop (not like I have to ask really since you will)
I don't think it's going to get tuned with the silencer. After looking over my partial logs some more and talking with my tuner, I decided it's not really worth it for me. Losing 1.5psi of boost and going 0.5 points richer in AFR means there is some serious restriction going on.

My logs only went out to just below 5k rpm's but even at that point it was already down close to 60WHP! If I had to guess I think it would probably be about that much drop all the way up through redline. So the car was probably down to close to 430WHP peak. Definitely a huge drop from what it was at with the Greddy and no silencer (and even a step down from the stock exhaust).

A little more info here:

http://forums.nasioc.com/forums/show...4#post37908234
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Old 08-26-2012, 06:42 PM   #2758
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it looks more purposeful than these do

which you could also get at autozone if you want
http://www.autozone.com/autozone/acc...uestid=1526516
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Old 08-26-2012, 06:47 PM   #2759
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OK. Thanks for your input.
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Old 08-26-2012, 06:53 PM   #2760
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OK. Thanks for your input.
no problem Mr. grumpypants
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Old 08-26-2012, 07:24 PM   #2761
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Let me get this straight-

You are saying you are losing 60 WHEEL hp from an exhaust silencer? Correct?
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Old 08-26-2012, 07:25 PM   #2762
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Let me get this straight-

You are saying you are losing 60 WHEEL hp from an exhaust silencer? Correct?
Yep. Driven by decreased boost and changes to AFR (which were created by adding the restriction of the silencer).
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Old 08-26-2012, 07:30 PM   #2763
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Originally Posted by xluben View Post
Yep. Driven by decreased boost and changes to AFR (which were created by adding the restriction of the silencer).
I don't feel those are realistic numbers, especially considering the fact that you have an external wastegate with dump pipe. I could see a 5-10 whp loss but saying you lost 60 WHP is bull****, imo.
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Old 08-26-2012, 07:33 PM   #2764
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I don't feel those are realistic numbers, especially considering the fact that you have an external wastegate with dump pipe. I could see a 5-10 whp loss but saying you lost 60 WHP is bull****, imo.
I actually believe the numbers. Bring it down like that at the end of the line probably makes the exhaust have less flow than the factory exhaust. Will it depend on conditions? Probably, but there is probably a pretty good decrease if the exhaust open improved the numbers over stock. I would think actual stock exhaust numbers would be somewhere in between.

Of course, it is also hard to tell without just strapping the car down and doing back to back dyno runs under the same conditions. In theory though...his assumptions and data logs are probably reading correctly.

Cars that are running stock turbos are also probably going to see next to now difference at all.
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Old 08-26-2012, 07:33 PM   #2765
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I don't feel those are realistic numbers, especially considering the fact that you have an external wastegate with dump pipe. I could see a 5-10 whp loss but saying you lost 60 WHP is bull****, imo.
OK. Thanks for your opinion.
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Old 08-26-2012, 07:38 PM   #2766
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OK. Thanks for your opinion.
Yah no problem. Keep believing the bull**** that you spout. Such as making more power than your turbo is rated for.
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Old 08-26-2012, 07:40 PM   #2767
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Yah no problem. Keep believing the bull**** that you spout. Such as making more power than your turbo is rated for.
It's magic.
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Old 08-26-2012, 07:51 PM   #2768
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Quote:
Originally Posted by themaus

Yah no problem. Keep believing the bull**** that you spout. Such as making more power than your turbo is rated for.
Lol so you don't believe dyno graphs and proven numbers?
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Old 08-26-2012, 07:56 PM   #2769
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Lol so you don't believe dyno graphs and proven numbers?
Proven numbers? Where is the dyno chart saying he lost 60WHP? Oh there isn't one.
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Old 08-26-2012, 08:20 PM   #2770
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Proven numbers? Where is the dyno chart saying he lost 60WHP? Oh there isn't one.
Here's the plot of the Greddy Ti-C: Silencer vs. No Silencer. I didn't post it because I couldn't get a full log.



You can see that the power delivery looks nearly identical, it's just a lot lower. Here it is with the stock exhaust added in for reference:



I'm not sure why I'd lie about this one. I, as much as anyone, wanted the silencer to work out.
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Old 08-26-2012, 08:21 PM   #2771
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Quote:
Originally Posted by themaus View Post
Proven numbers? Where is the dyno chart saying he lost 60WHP? Oh there isn't one.
I was referring to this comment.

Quote:
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Keep believing the bull**** that you spout. Such as making more power than your turbo is rated for.
You sure have an obnoxious mouth.
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Old 08-26-2012, 08:26 PM   #2772
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^ Thats all irrelevant if it wasn't taken back to back.
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Old 08-26-2012, 08:30 PM   #2773
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^ Thats all irrelevant if it wasn't taken back to back.
Yeah, it must have been something else that happened in the last week and caused my power to drop by 60HP. I'm sure it was just a coincidence...
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Old 08-26-2012, 08:32 PM   #2774
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I can't believe that there is even a doubt here
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Old 08-26-2012, 08:35 PM   #2775
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Yeah, it must have been something else that happened in the last week and caused my power to drop by 60HP. I'm sure it was just a coincidence...
The rated crank horsepower for your turbo is 440HP. You should sign up for a vendor account here to sell the bull**** that comes from your mouth.
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