sc in no difference

[jessica2112]

Well, I put in the sc today. Heres the beef, no leaks, did the John_D wrap got the right belt, did the pvc mod all the stuff I was supposed to do. I run almost 30 hg vac at idle, never get boost until almost 5 grand. Then maybe two pounds. FMU never responds. Still at 45 lbs psi F/P. Let my brother have it for awhile, took it to his friends shop, came back as filthy as I was, with no more answers then I had. Said he saw a GS there, told me I should get one of those instead. *******. What is up? The belt is not slipping. Is the impeller going the right way? I used the wrap picture on greymans site. I just don't get it. I routed the line for the fmu right. The lines are connected the only way they can go, and besides that would not affect my boost would it? I put the breather on the oil filler. The TB has the plug. HELP

[ May 29, 2005, 11:52 AM: Message edited by: jessica2112 ]

[Turbo V6 Camaro]

if you dont get boost till 5K RPM the belt is slipping

its not spinning the wrong way or you would suck air out of the motor and it would stall lol

also look/lissen for leaks

[jessica2112]

Guess thats right, Duh. I spent too long under the hood. When does the boost usually kick in? Do I have to floor it all the time, to get any boost?

[ May 29, 2005, 11:39 AM: Message edited by: jessica2112 ]

[Turbo V6 Camaro]

you should see boost boost 2500-3000 like 2 psi then biuld up to max boost at 5500 or so

if you want full boost at 3K get a turbo

[98Camaro3.8]

Originally posted by jessica2112:
Oh the agony. Iam am so bummed out. Talk about a letdown. I am not impressed at all. No onder people nitros and turbo. It does sound kinda neat though. But not worth 1,500.

If it's not working right then of course you're not gonna be impressed. Why not get try to fix it before complaining about how it was a waste of money? You can't just throw money at the car and expect it to be perfect. Work the bugs out and get it working right.

Nobody said a blower was something you can just slap on the car and go fast.

[jessica2112]

Just upset at sc, post edited

[ May 29, 2005, 11:40 AM: Message edited by: jessica2112 ]

[jessica2112]

OK, done being a b****. I spent a long time in the sun working on this, and it frazzled me. My apologies. The only thing I can think of is the bypass valve has a vacuum looking fitting at the top of it, but I don't know what to put there. I heard it blow off when I turned it off once. Other then that, I am baffled. I got to 50 lbs fp on a hard run. I think the FMU is not getting the pressure it needs from the vacuum line tap under what boost I have to operate. Whattya think?

[Rob Bell]

Your FMU probably does not appear to be working because you're getting almost no boost. If you're sure you hooked it up right, then don't worry about it until you are sure that you've got boost. Then if you see that the fuel pressure is not increasing, you can investigate the FMU. I know from following other Powerdyne threads that you have to have the belt really tight.

3.8's right though, don't give up yet! A SC is a very complicated power adder; it's like adding a second engine to your car. There's bound to be some issues to work through, especially since you haven't installed one before. You're already 90% there, you've got the thing installed and you're seeing a little boost... So you know it works, just not real well yet. Now you just have to work the bugs out. Be patient, and go slow and easy, you'll work out the problems.

[asdf1234]

Originally posted by jessica2112:
The only thing I can think of is the bypass valve has a vacuum looking fitting at the top of it, but I don't know what to put there.

A vacuum line. T it to a line that runs to the FMU.

[jessica2112]

Oh! It looked like it was calling me to attach a hose to it.........., OK should it see vac? I have a one way valve before the FMU, should it be before or after? Thanks you guys. I was just so burned out earlier- seven hours in the sun on this, but by G I did it. that's why I vented. I wish I could edit that first and third post. 98 camaro is right. Stop whining and start thinking. Sorry 98 [img]smile.gif[/img]

[Turbo V6 Camaro]

Originally posted by jessica2112:
Oh! It looked like it was calling me to attach a hose to it.........., OK should it see vac? I have a one way valve before the FMU, should it be before or after? Thanks you guys. I was just so burned out earlier- seven hours in the sun on this, but by G I did it. that's why I vented. I wish I could edit that first and third post. 98 camaro is right. Stop whining and start thinking. Sorry 98 [img]smile.gif[/img]

click the edit button ;)

[grayman]

regarding the one way check valve for the fmu:
double check that the valve is pointed the corrent way. I am not sure what kind you have but i have pics for the napa type on my web site and instructions.

At 3 grand rpm I see about 1/2 pound of boost. it builds from there. the fmu should kick in immediatly even if it is only seeing half a pound. You will notice the FP gauge increase about 3 psi with half pound of boost...the fp will keep rising up to about 80+ psi of fuel when you get close to redline.

concering belt tightness. If that is a new belt then it will stretch so be ready to check it and tighten every couple of days for about a week or two. If it is a belt that was used (came with your kit) then it probably will not stretch much at all. BUT>>>>you never mentioned in this thread HOW tight you guys set the belt. If your AC compressor is not clanking around making noise whe n you turn on the ac then the belt isn't tight enough. Grab the belt between the tensioner pulley and the power steering pump and twist it sideways...how far does it twist? You want to BARELY be able to twist 1/4 around....or 'straight up and down.' If it twists more than 1/4 way around it is not tight enough.

You will be fine. There are only a couple out of the many posts here about 'just installed my powerdyne' that ever went perfect the first day out. It can happen, believe me..but in other cases just stick with it. You will be fine.

I also have not heard you mention of how and where you mounted the IAT sensor. (intake air temperature sensor...it is the sensor that connects to the stock air lid rubber flex coupler)
take a look on my site at the 'ugly temp discharge tubing page' and you will see how I routed the IAT sensor right into the discharge tube...near the TB.

[ May 30, 2005, 01:27 AM: Message edited by: grayman ]

[PiercedJD]

bypass valve needs to be connected to a vaccum source behind the throttle body throttle plate.

it should see boost when the plate is open and vaccum when the plate is closed.

if it is in front of the throttle plate it will not function properly. ( it will never open, or not open enough).

[jessica2112]

OK, line is connected to bov. AIT sensor in outlet tube. (Hole was already there). I got 5 pounds of boost today, ran up to 66 psi f/p, now it never goes below 63 psi. Is that ok? I was worried that if the pressure stays there, I might spring a leak. Also, the computer or something is messed up. No ses light, but my line launch is SERIOUSLY as fast as a 50 cc moped. I don't get it. On a roll, everything seems ok. But this stoplight launch is just horrible. I don't see the reduced power light, weird. Oh, when I jumped on it at about 25 MPH I left a 3 foot scratch. That was SOOOO neat. I thought something felt funny, and I looked in the rearview and there it was. One little rubber strip. Cool, cool, cool. [img]smile.gif[/img] Thanks everyone for your input.

[Turbo V6 Camaro]

Originally posted by jessica2112:
OK, line is connected to bov. AIT sensor in outlet tube. (Hole was already there). I got 5 pounds of boost today, ran up to 66 psi f/p, now it never goes below 63 psi. Is that ok? I was worried that if the pressure stays there, I might spring a leak. Also, the computer or something is messed up. No ses light, but my line launch is SERIOUSLY as fast as a 50 cc moped. I don't get it. On a roll, everything seems ok. But this stoplight launch is just horrible. I don't see the reduced power light, weird. Oh, when I jumped on it at about 25 MPH I left a 3 foot scratch. That was SOOOO neat. I thought something felt funny, and I looked in the rearview and there it was. One little rubber strip. Cool, cool, cool. [img]smile.gif[/img] Thanks everyone for your input.

the fuel psi should go back down when not under boost