Case Study # 33 - Helix Silencer sucks
Apr 21, 2005, 11:47 AM
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Case Study # 33 - Helix Silencer sucks
Here is member Berkel who has the following modifications
Stock Intake with K & N drop in
Helix 3" Exhuast with high flow cat and silencer in muffler tip
Walbro fuel pump
Buddy Club 264 / 264 cams
SAFC II - customer's own settings
Here is the extreme effect the silencer had on this car - first run WITH silencer and 2nd run same exact settings with the silencer removed
its a 50 whp loss ! I dont think I will be using a silencer any time soon
Stock Intake with K & N drop in
Helix 3" Exhuast with high flow cat and silencer in muffler tip
Walbro fuel pump
Buddy Club 264 / 264 cams
SAFC II - customer's own settings
Here is the extreme effect the silencer had on this car - first run WITH silencer and 2nd run same exact settings with the silencer removed
its a 50 whp loss ! I dont think I will be using a silencer any time soon
Apr 21, 2005, 12:09 PM
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In regards to the heading...
All Silencers Suck, PERIOD! It creates a very restrictive bottle neck.
I'm suprised you never came across this situation earlier.
All Silencers Suck, PERIOD! It creates a very restrictive bottle neck.
I'm suprised you never came across this situation earlier.
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Apr 21, 2005, 12:13 PM
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Originally Posted by Taimur
In regards to the heading...
All Silencers Suck, PERIOD! It creates a very restrictive bottle neck.
I'm suprised you never came across this situation earlier.
All Silencers Suck, PERIOD! It creates a very restrictive bottle neck.
I'm suprised you never came across this situation earlier.
Apr 21, 2005, 03:51 PM
#14
Hey all,
Just battled CT traffic on 95 and got home.
Wow, car is a monster. I love it.
I was surprised at how much the silencer stole. The funny thing is it made the most horrible noise on the dyno at WOT in the upper rpms. I think everyone was surprised at the horror of the shrieking tea kettle. It sounded much better without the silencer obviously. I did drive the car without the silencer when I first installed the cams at DSG (www.dentsport.com), so I knew it took power, I would have guessed 25 HP as well, not 50. I guess my Butt Dyno sucks!
Leaving with 80 more HP was definitely cool, lol. Al rocks, and IMHO he is actually a very nice guy, hehe. Car is super smooth. I know everyone says it, but it really does transform the car. I was happy to see 300, then 312. When he got the other ~20 HP it was even sweeter. I also found out my boost gauge reads way low, so all this time I thought I was running 20 psi, I was really running ~18! I teed it next to the FPR, so that's probably why...
Nice to meet the Pruven guys and a couple of evolutionm.net/evo-ny members.
Al question, did you do the idle modification for the cams? Car does idle better, but wasn't sure if it was just from resetting the battery. On the other hand, the idle isn't that bad with the 262/272 setup anyway.
Again, thanks to DSG, Pruven, and of course Al/Dynoflash! Updating my sig now...
FB
Just battled CT traffic on 95 and got home.
Wow, car is a monster. I love it.
I was surprised at how much the silencer stole. The funny thing is it made the most horrible noise on the dyno at WOT in the upper rpms. I think everyone was surprised at the horror of the shrieking tea kettle. It sounded much better without the silencer obviously. I did drive the car without the silencer when I first installed the cams at DSG (www.dentsport.com), so I knew it took power, I would have guessed 25 HP as well, not 50. I guess my Butt Dyno sucks!
Leaving with 80 more HP was definitely cool, lol. Al rocks, and IMHO he is actually a very nice guy, hehe. Car is super smooth. I know everyone says it, but it really does transform the car. I was happy to see 300, then 312. When he got the other ~20 HP it was even sweeter. I also found out my boost gauge reads way low, so all this time I thought I was running 20 psi, I was really running ~18! I teed it next to the FPR, so that's probably why...
Nice to meet the Pruven guys and a couple of evolutionm.net/evo-ny members.
Al question, did you do the idle modification for the cams? Car does idle better, but wasn't sure if it was just from resetting the battery. On the other hand, the idle isn't that bad with the 262/272 setup anyway.
Again, thanks to DSG, Pruven, and of course Al/Dynoflash! Updating my sig now...
FB
Apr 21, 2005, 04:12 PM
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Damn! Who ever knew.. I always thought 10-20hp tops.
My silencer == magnaflow muffler
Nice #'s too
My silencer == magnaflow muffler
Nice #'s too
Last edited by justchil; Apr 21, 2005 at 04:28 PM.