I installed a fairly small trust core with 2 inch piping. and now my car spools slower (expected that) AND is just plain slower. Also, either my bov flutters or its my wastegate or my compressor surging. its not a normal flutter, it sounds like a clown laughing (woop woop wooop wooop) Should I get bigger piping? is my wastegate screwing up, my bov malfunctioning?

 

Bigger piping should only increase lag unless you're running a lot of air through them. THe flutter seems to be a common prob with the HKS SSQV unit.

 

I wouldn't have used 2" piping...

How much boost are you running? Is it stable?

 

10psi, rock solid.

 

does that mean the hks unit doesnt work for our fc's? i was going to get one but now im kinda freaked out

 

Something is not kosher with the BOV.....

Did you buy the IC used??? (ie is it flowing properly,,, sounds like the IC is creating a pressure differential)

and is the BOV before or after the IC??? (should be after, as close to the t-body as possible... I know cause Mines about three inches from the turbo, and I get some surge at light boost changes.. Gotta make a new pipe...)

 

The core is a used trust core. its 29" end tank to end tank, 7.5" tall and 2.75" thick. It was pressure tested before sold. Bov is a vented stocker about a foot off the turbo.

 

oh and my turbo is ALOT louder than before. before I could not hear it spool at all and now it's the typical noise except loud! sounds like i'm running big boost with a big turbo.

 

Ok. bud.. sounds like you got the same problem i do.... boost leak somewhere....

I had my system apart the other week to seperate the fuel lines to supply each rail seperately, and, somehow, when i put it back together.... I gots a boost leak...

I can hear the turbo SCREAMIN all of a sudden and its Laggy and it aint got as much powah...

This has happened before.. 1 time I ripped the gaskett, another time once of the couplers was torn just a bit...

Gotta get that fixed cause the turbo will over spool and that can cause big time problems i a short time.

Like for i'll fitting couplers, loose clamps.... ETC..

Aslo... the Stock BOV can't take boost much higher than 8 PSI.. If you have it vented to atmosphere... I'ds seriously think about getting another!!!!

 

Ok, I'll really start cracking down on vac/boost leaks. I did use the home depot method.... ABS plastic most of the way, although every peace was glued inside and out. I'll re-glue and tape the outsides of all the connections.

 

I thought I had a major vac. leak coming from my stock TMIC's lower 'elbow' (to TB), so I went to home depot to find something... Well, they had a piece in the plumbing section that was the EXACT same dimensions as my stock IC elbow! It was a thick flexible rubber with clamps for $7.

Turns out, after putting that on, I still had the major vac. leak... So I just left it on the car.

A couple days later, I was racing a silly Honda on the freeway (you know, where you slow down and speed back up repeatedly, while they're going WOT the whole time) and as I went to pull away for the final time, my car suddenly lost power at 7k RPM's in 4th... I shifted into 5th (WOT) and it fell flat on it's face. I pulled off the freeway, turned around and drove home, staying out of boost.

I assumed I had popped off an IC hose or something, but I thought it was hilarious that after removing the IC for inspection, I saw the Home Depot elbow (had forgotten it was there) and there was a HUGE tear/blown out section in the side of it! I can just imagine the thing swelling under the boost until finally exploding, lol!

Moral of the story, avoid using Home Depot products for your intercooler needs, lol.

 

do not use homedepot cuplins!!!! they dont work... ATleast if you are going to use them, try to do so on the colder parts. Dont use them on the turbo directly nor the charge pipe. I would check the couplins.

 

I've been using the 3" to 2" coupling for my tid for over a year until now. and now its just a 2" to 2". Bcool suggested it may be the flexible exhaust piping i used to route around the battery and coil. Could this possibly be unfit to hold pressure?

 

the tid is the coldest part on the turbo. It doesnt really get that hot. Im talking about the outlet of the turbo to the IC. Is there anypics you can take of the setup?

 

I was going to say...vacuum leak???


-Ted

 

LOL.... Boost... Vac.. its still a leak... only, I've found that with the haltech... vac leaks dont cause a problem if they are after the t-body... so, I always say "boost leak" because thats where I notice it!!! hell... When my one coupler ripped (i'm pretty sure the screwdriver slippage is what caused it).. I was driving around for like three days until I finally got on it real hard and noticed that there was a high pitched scream and only 11 PSI of boost in third..

I even had to do the old carb cleaner spray the pipes method to find the leak cause it was samll when not pressurized and on the UNDERSIDE of one of the couplers... right were I hit it with the screwdriver and thoguht nothing of it a few days before...

Back when i had the stock setup.. DAMN... any little leak after the AFM would wreak HAVOC!!!

 

Pics-

 

And one from before

 

Oh, I put money it's a leak somewhere...

PVC should not be used for IC pipes, especially before the IC!


-Ted

 

wheres the BOV?

 

See the stock cast tube in the second pic, comes off the nipple on that.

And ABS plastic has a higher tolerance against heat. I'm going to glue and tape all the connections again with a very liberal amount of each.

 

why dont you have someone accel and you try to feel around for leaks.... thats really the only way you are gunna find it, unless you do a pressure test... And you might want to remove the fan while you look for it. Its only 4 10mm bolts..

 

When school starts I'll have acces to a smoke machine.

 

Intercooler piping is what? Aluminum? Steel? Aluminized steel? Its used for exhaust and what ever else you want right?

Black ABS piping is used for what? Sewage? The ever popular potato cannon? I know several plumbers and worked with several at one point and even though it says it can take 600psi, and withstand a higher temp, they never trust it past 10psi and anything over 160degree conditions. Heck I can get out my heat gun and melt that stuff without trying. (Warning: it gives off BAD fumes when heated/burning, lethal ones. It should never be used moving heated air.)

Thats your problem. Plus it dosent even looks like you used the correct glue for it?

 

I used the correct glue, the white stuff is just what happened when i sprayed carb cleaner trying to find the leak.