sc in no difference

[grayman]

Very Nice.

My FMU keeps the fuel pressure up for quite a while after the car has seen boost. I was going to ask about this (start a thread) but I think i figured it out... After the car has been shut off the FP returns to normal. I think either the FMU or the 'one way check valve' keeps the FMU in a 'multiply the FP by the FMU's set RATIO state' on purpose. It the FMU fluctuated on and off immediatly upon going from boost to vacuum and back again (during manual shift for instance) this could cause intermitant FP problems. That might be bad (rich to lean then rich again, etc...)

Maybe some veterans can tell us about the 'fmu sustains FP well after engine is no longer seeing boost' deal. ?????(anybody????)

You have a used kit with a BOV so MAYBE you have a modified or adjusted FMU ratio. Instead of the FMU multiplying FP by 6/1 perhaps it is running 3/1 or 4/1. Your FMU is working it seems...but you are seeing a lot less FP increase than on my rig for instance. (my FP is 47-51 at idle and up to 86 psi at 6 pounds of boost.)

Are you seeing FULL RICH on your A/F gauge when you are 'dropping the hammer?' You want to figure out if your max '65 psi FP' under full boost is enough to keep the Air Fuel Mixture on the RICH SIDE. Did the guy who sold you the kit say anything about the FMU? Can you contact him...ask if it has been adjusted? Is it the 'stock' vortech fmu that comes with the RKSPort kit or did he replace it or change/modify it?

Dont worry about leaks in fuel line. the most important thing is to worry about good fuel line connections when you do things line adding the FP sender and the FMU. As long as those are ok the rest of the system is very capable of handling the hi psi of our high pressure fuel system.

Um, I can't help much with the slow launch problem. I haven't had to worry about that so have never studied it. Was your AC on when you got the slow launch? Have you tried launching with the AC off? (sometimes having the AC on can cause bad idle...bad idle can cause bad launch)

So, how loose/tight was the belt before and after your cool 'quick grip clamp' job?

[jessica2112]

Ac was off, It is really bad. It used to be so much faster off the line. Now it's embarassing. Don't yell at me, but the only bolts in it are the top right and bottom right. the left hole on the mounting bracket lines up with nothing. It came with a metal bar, but it lines up with nothing as well. I am getting a used computer for the car (metal box) from e-bay. Could I send that somewhere and have them program that, and swap it out? I really got to figure out this no power till boost problem....no reduced power light, no ses flag. Oh I was too busy to look at the A/F gauge. I'll check that out tomorrow, but by the time I'm at WOT, I am already doing 30-40 when I hit it. I can't hit it off the line, I go nowhere fast. So I am doing 80 pretty quick and busy driving.
Old F/P 42-46 now 66 all the time. Saw a 70 lb spike once. It goes right back to 66 after sitting awhile too.

[phoenix64]

Just a thought. Changing intakes can screw up your MAF readings.

I had part throttle problems with my wierd right angle pipe. Caused an over rich mixture, and severly retarded timing.

[jessica2112]

If It needs a tune, what are we talking about? Taking it to a dyno shop? Somewhere to reprogram it? If so where is there around Boca Raton?

[Turbo V6 Camaro]

Originally posted by jessica2112:
If It needs a tune, what are we talking about? Taking it to a dyno shop? Somewhere to reprogram it? If so where is there around Boca Raton?

umm you reset you pcm right? (take battery out for 5-10 mins

[jessica2112]

Just during the install, the batt was disconnected. It has not been disconnected since.

[blackFbird_98]

ya if you disconnect your battery it would reset it in around 50 miles so it will relearns the fuel curve and everything.....as for the tune if you have a FMU you will have to have it dyno tuned which last I checked was around $450-$500, or you can get a good laptop for $700-$1400 and get hptuners for I think $500 so that is your choice, or get bigger injectors and get rid of the FMU and pcmforless.com will reprogram your PCM which is what I want to do

[grayman]

you don't need to tune a 6 psi powerdyne on our cars.
Whatever problem you are having with fp and off the line is something 'odd'. It does not mean you need to buy a new pcm nor does it mean you need to pay for dyno tuning.

If the powerdyne is installed correctly you will have a much more powerfull car whether you launch or are already rolling.

I just noticed you said something about '2 bolts' and that there is no place for the third bolt....
um.....there is a bolt under the heater core water hose inlet that is attached to the block. remove that bolt and use it to attach the 'S' shaped bracket. The other end attaches to the blower mounting plate. Two bolts are not enough to safely mount that blower.

did you confirm with the mcaanda instructions that the FMU hoses are hooked up correctly?

[grayman]

do you have or can you borrow a digital camera?

if so then take a bunch of pics and mail them to me or post them on a website so that we can take a how your powerdyne and fmu and bov etc, are all hooked up.
that might help us help you.

[Turbo V6 Camaro]

i can host them if you need a host email to v6turbo@gmail.com

[jessica2112]

I did not get an s bracket. It is not fast. Today I was only running 44 lbs FP so I went into 2 lbs of boost to see if the FMU came on. The FMU never activated. So I run under boost now. Also as soon as this went in, my a/c compresser started to grumble a little bit at idle. Did it just pick this time to throw the bearings? Is It the wrap? The ac still works, and it only makes the grumble at idle. You can feel it in the steering wheel. I will take the pictures you asked for today, and try to get them posted . Thanks viper [img]smile.gif[/img] Have to use regular camera and get them developed.

[jessica2112]

Can I order this bracket somewhere? Or should I try to make one? Pictures will be ready at 3:00 EDT.

[ May 30, 2005, 12:10 PM: Message edited by: jessica2112 ]

[Turbo V6 Camaro]

Originally posted by jessica2112:
Have to use regular camera and get them developed.

What is this word "developed" [img]tongue.gif[/img] [img]tongue.gif[/img] [img]tongue.gif[/img] [img]tongue.gif[/img] [img]graemlins/rofl.gif[/img]

[jessica2112]

Some of us cannot afford digital cameras because their cars take all their money... [img]graemlins/twak.gif[/img]
It's the FILM THATS A CAMERA [img]graemlins/omg.gif[/img]

[blackFbird_98]

I am surely not suggesting this and will probably get [img]graemlins/slap.gif[/img] for it but I dont have my S bracket hooked up either and it is running fine but if greyman says you need it you should probablly have it I personally dont think that is your problem