STS silicone coupler
STS silicone coupler On the dyno I noticed a *problem*: The silicone coupler from the FMIC piping to the TB is sucking itself shut under WOT. It eventually makes itself back to its normal shape but is causing peak torque to be around 1000-1200 rpms too high and I am running out of r's to make power. Anyone know where I can find a more solid coupler? Thanks. Car did put down 454rwhp on 7psi and a 3600 stalled A4 though. I am hoping for 480-500.
Originally Posted by trtturbo
Its normal for that elbow to suck in for just a second as the engine is in vacume until boost hits. Its not a big deal.
You can get a stronger elbow if bothers you though
You can get a stronger elbow if bothers you though
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Joined: Oct 2004
Posts: 371
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From: Just outside of Palm Springs Ca.
kjmdrumz3,
Are you saying it is still shut when you have boost? I would make sure you are actually getting boost at that RPM as I have yet to see ANY boot like that compress when there is boost behind it! Double check if you are getting boost when it compresses down and go from there. I have had this problem with some of my N/A cars and we simply cut a piece of thin sheet metal neatly to fit inside the bellows to hold its shape and clamped the whole thing over the throttle body, we actually found quite a bit of power doing so as the thing was staying shut the whole time under load!
-Bryan
Are you saying it is still shut when you have boost? I would make sure you are actually getting boost at that RPM as I have yet to see ANY boot like that compress when there is boost behind it! Double check if you are getting boost when it compresses down and go from there. I have had this problem with some of my N/A cars and we simply cut a piece of thin sheet metal neatly to fit inside the bellows to hold its shape and clamped the whole thing over the throttle body, we actually found quite a bit of power doing so as the thing was staying shut the whole time under load!
-Bryan
Originally Posted by kjmdrumz3
I understand that, but the thing is it returned to its original shape but took forever doing it.
Originally Posted by Race-Prep
kjmdrumz3,
Are you saying it is still shut when you have boost? I would make sure you are actually getting boost at that RPM as I have yet to see ANY boot like that compress when there is boost behind it! Double check if you are getting boost when it compresses down and go from there. I have had this problem with some of my N/A cars and we simply cut a piece of thin sheet metal neatly to fit inside the bellows to hold its shape and clamped the whole thing over the throttle body, we actually found quite a bit of power doing so as the thing was staying shut the whole time under load!
-Bryan
Are you saying it is still shut when you have boost? I would make sure you are actually getting boost at that RPM as I have yet to see ANY boot like that compress when there is boost behind it! Double check if you are getting boost when it compresses down and go from there. I have had this problem with some of my N/A cars and we simply cut a piece of thin sheet metal neatly to fit inside the bellows to hold its shape and clamped the whole thing over the throttle body, we actually found quite a bit of power doing so as the thing was staying shut the whole time under load!
-Bryan
Shouldn't it be more like 4000-4500? The car is shifting around 6200-6300, but peaking at 5500 isn't giving it enough time to build the power it should be. Trending Topics
Originally Posted by trtturbo
define forever. Normally, it sucks in for just a split second, then goes back to normal.
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Joined: Oct 2004
Posts: 371
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From: Just outside of Palm Springs Ca.
I think you need to look at more than just the boot, that car should make peak boost BEFORE 3300 RPM! My car with a REAR mount turbo system and a GT76 makes peak boost before 4000 RPM! I think you need to look at the overall setup and see if you can find the problem. The reason it is not puffing back up to its normal shape is because there is no boost behind it until 5000 RPM! There is a seperate problem in your system lokk it over and you will find it.
-Bryan
-Bryan
Originally Posted by Race-Prep
I think you need to look at more than just the boot, that car should make peak boost BEFORE 3300 RPM! My car with a REAR mount turbo system and a GT76 makes peak boost before 4000 RPM! I think you need to look at the overall setup and see if you can find the problem. The reason it is not puffing back up to its normal shape is because there is no boost behind it until 5000 RPM! There is a seperate problem in your system lokk it over and you will find it.
-Bryan
-Bryan