The reason you MUST do a "boost leak test"!! Don't pass go. Read this.
#1
The reason you MUST do a "boost leak test"!! Don't pass go. Read this.
I know, as long as I have been "surfing" this site, I see the Boost leak tester threads all over, and I say "whatever", I dont hear any leaks, and I know the clamps are tight, so I don't need to worry................WRONG!!!! I had the car tuned in Georgia 3 weeks ago (15 hour round trip) , I didn't get the numbers I wanted to.(MAXboost 23psi)I took it to the strip a week later, and it was SLOWER with the stroker, than it was with the 2.0L motor.
I then thought I would go to AMS and get it tuned on Meth (Didn't work, they saw a problem on the pump gas run, and didn't want to go further) The pump gas dyno saw the max boost PSI at 21!! and the HP was slightly LOWER also.
I did the boost leak tester, here is the how to thread:http://www.vfaq.com/mods/ICtester.html
I did it, and MY GOD!! I found 3 BIG leaks!!! One was probably done with installing the stroker motor, there was a "triangle" slit in one of the small vaccuum hoses, and one IC hose was leaking around the clamp. I had the AMS LICP which was a little "road rashed" from the wife coming in "hot" into the driveway and scraping it. that had a PINHOLE hole in it, and MAN did the air WHOOOOOOSH out of that puppy!!! I got all fixed now, but I NEVER would have found the leak in the small vaccuum hose unless I did this test!!!! NEVER!!
So if you look at all the TIME and MONEY I wasted on a Tuneless-tune, DON'T YOU do the same, do the boost leak tester BEFORE you go to a dyno run, or you will be disappointed. Dyno4mance and AMS did an AWESOME JOB with what they had to work with, and if I only did this damn test FIRST, I wouldn't need to write you this.
Hope you spend the hour to check FIRST.......Happy motoring.
P.S., I know this is a newbie mistake, and it probably has been discussed adnauseum, if so, take this as a personal venting.
I then thought I would go to AMS and get it tuned on Meth (Didn't work, they saw a problem on the pump gas run, and didn't want to go further) The pump gas dyno saw the max boost PSI at 21!! and the HP was slightly LOWER also.
I did the boost leak tester, here is the how to thread:http://www.vfaq.com/mods/ICtester.html
I did it, and MY GOD!! I found 3 BIG leaks!!! One was probably done with installing the stroker motor, there was a "triangle" slit in one of the small vaccuum hoses, and one IC hose was leaking around the clamp. I had the AMS LICP which was a little "road rashed" from the wife coming in "hot" into the driveway and scraping it. that had a PINHOLE hole in it, and MAN did the air WHOOOOOOSH out of that puppy!!! I got all fixed now, but I NEVER would have found the leak in the small vaccuum hose unless I did this test!!!! NEVER!!
So if you look at all the TIME and MONEY I wasted on a Tuneless-tune, DON'T YOU do the same, do the boost leak tester BEFORE you go to a dyno run, or you will be disappointed. Dyno4mance and AMS did an AWESOME JOB with what they had to work with, and if I only did this damn test FIRST, I wouldn't need to write you this.
Hope you spend the hour to check FIRST.......Happy motoring.
P.S., I know this is a newbie mistake, and it probably has been discussed adnauseum, if so, take this as a personal venting.
#2
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Originally Posted by smokedmustang
I know, as long as I have been "surfing" this site, I see the Boost leak tester threads all over, and I say "whatever", I dont hear any leaks, and I know the clamps are tight, so I don't need to worry................WRONG!!!! I had the car tuned in Georgia 3 weeks ago (15 hour round trip) , I didn't get the numbers I wanted to.(MAXboost 23psi)I took it to the strip a week later, and it was SLOWER with the stroker, than it was with the 2.0L motor.
I then thought I would go to AMS and get it tuned on Meth (Didn't work, they saw a problem on the pump gas run, and didn't want to go further) The pump gas dyno saw the max boost PSI at 21!! and the HP was slightly LOWER also.
I did the boost leak tester, here is the how to thread:http://www.vfaq.com/mods/ICtester.html
I did it, and MY GOD!! I found 3 BIG leaks!!! One was probably done with installing the stroker motor, there was a "triangle" slit in one of the small vaccuum hoses, and one IC hose was leaking around the clamp. I had the AMS LICP which was a little "road rashed" from the wife coming in "hot" into the driveway and scraping it. that had a PINHOLE hole in it, and MAN did the air WHOOOOOOSH out of that puppy!!! I got all fixed now, but I NEVER would have found the leak in the small vaccuum hose unless I did this test!!!! NEVER!!
So if you look at all the TIME and MONEY I wasted on a Tuneless-tune, DON'T YOU do the same, do the boost leak tester BEFORE you go to a dyno run, or you will be disappointed. Dyno4mance and AMS did an AWESOME JOB with what they had to work with, and if I only did this damn test FIRST, I wouldn't need to write you this.
Hope you spend the hour to check FIRST.......Happy motoring.
P.S., I know this is a newbie mistake, and it probably has been discussed adnauseum, if so, take this as a personal venting.
I then thought I would go to AMS and get it tuned on Meth (Didn't work, they saw a problem on the pump gas run, and didn't want to go further) The pump gas dyno saw the max boost PSI at 21!! and the HP was slightly LOWER also.
I did the boost leak tester, here is the how to thread:http://www.vfaq.com/mods/ICtester.html
I did it, and MY GOD!! I found 3 BIG leaks!!! One was probably done with installing the stroker motor, there was a "triangle" slit in one of the small vaccuum hoses, and one IC hose was leaking around the clamp. I had the AMS LICP which was a little "road rashed" from the wife coming in "hot" into the driveway and scraping it. that had a PINHOLE hole in it, and MAN did the air WHOOOOOOSH out of that puppy!!! I got all fixed now, but I NEVER would have found the leak in the small vaccuum hose unless I did this test!!!! NEVER!!
So if you look at all the TIME and MONEY I wasted on a Tuneless-tune, DON'T YOU do the same, do the boost leak tester BEFORE you go to a dyno run, or you will be disappointed. Dyno4mance and AMS did an AWESOME JOB with what they had to work with, and if I only did this damn test FIRST, I wouldn't need to write you this.
Hope you spend the hour to check FIRST.......Happy motoring.
P.S., I know this is a newbie mistake, and it probably has been discussed adnauseum, if so, take this as a personal venting.
I don't understand why AMS or the other tuner did not check this for you. Especially after the long drive to get tuned, the long wait etc....
The Boost Leak test should be done anytime you change ANYTHING on the car.
#3
Originally Posted by VTECH8TR
Kevin,
I don't understand why AMS or the other tuner did not check this for you. Especially after the long drive to get tuned, the long wait etc....
The Boost Leak test should be done anytime you change ANYTHING on the car.
I don't understand why AMS or the other tuner did not check this for you. Especially after the long drive to get tuned, the long wait etc....
The Boost Leak test should be done anytime you change ANYTHING on the car.
A SIMPLE boost check done by me would have solved all my problems!! 1 hour max. now look, I got 2 tunes, drove 25 hours JUST getting there and back, not to include the dyno times, and spent??? I got the car home, and am UN-TUNED!! In a sence. AMS did richen it up, as it was TOO lean before. I am going back real soon for another tune, with some REAL numbers. here are the 1st set of dyno numbers. AMS tune was less, because the LEAKS WERE GETTING BIGGER!!!
I have been:
#5
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I would be eager to see a dyno after you found after the leaks....does the car feel to pull harder now? I would think that the biggest problem you had was in the vaccuum line if it was one of the ones on the boost controller.
#6
Originally Posted by scottatayamaha
I would be eager to see a dyno after you found after the leaks....does the car feel to pull harder now? I would think that the biggest problem you had was in the vaccuum line if it was one of the ones on the boost controller.
Last edited by smokedmustang; Aug 29, 2006 at 05:26 PM.
#7
Originally Posted by Links0000
good post, ive been meaning to check mine but im too lazy and i drink to much
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#10
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Originally Posted by sr20det91
^^^^ the same reason it doesnt pop out of your rim. You drill a hole in the PVC cap and pull it through from the back side. If you've ever seen a valve steem not installed in something you will see that there is a seat on the bottom of it that holds it in place.
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My homemade tester doesnt leak. The valvstem i used has something like a shaft ring. Thats where it snaps in with the hole you drill on the PVC plug. Then i siliconed it thru the inside so it can be airtight.
#12
I actually drilled into the PVC CAP, and screwed a valvestem in it. I used a different one, then they show in the diagram. screw in, NOT snap in. It works also. yes these sizes are for the stock turbo, (TME in my case)
Last edited by smokedmustang; Aug 29, 2006 at 06:09 PM.
#15
Originally Posted by hova00
Ill have to check mine.
Another interesting finding, is the way the stock IC pipes BALLOON under pressure,(20psi) makes you wonder about upgrading to Samco hoses, keep the pressure where it has to go, instead of ballooning up like that!