Just purchased paxton charger need help!

[daviszx3]

i just purchased a paxton supercharger off ebay its a sn-89 system and its going on a stock engine im just wondering what kind of upgrades do i need to make or will i b ok with it only making 5-6 lbs of boost here is the item # 260233972529 please check it out and let me no if u think i am going to need anything and do you think i got a decent deal on it? also what is the deal with the FMU do i need to get it recalibrated thanks

 

[BK_CAULEY]

i jsut looked at it and i think youshould be fine. everything seems ok. im not sure but i dont think you can calibrate an FMU it is just a vaccum regulated pressure device. it cuts of the return line to the tank so you have more fuel pressure. you should be ok.

 

[daviszx3]

ok thanks does it look like everything is there? what about the price you think its good?

 

[BK_CAULEY]

$975..yea thats good. i dont see any hardware. but you can get bolts at lowes all day long

 

[daviszx3]

any idea on what kinda times i could expect also anyone no what kinda fluid it uses

 

[Red9250]

This website has a lot of info on the SN paxtons:

superchargerhelp.com

Go to the SN specific forum.

Select "from the beginning" on the date range and read away.

 

[69clark]

I am running a VR-4 supercharger on my cobra. Very similar to your sn-89. I also did alot of reading on superchargerhelp.com, lots of good info.

 

[bentley429]

Since when cant you calibrate a FMU? There is a small disc inside of it that can easily be swapped out.

 

[speedytang]

Yes the FMU can be calibrated by changing disc for the size of injectors and you can even use a fish tank valve in the vacuum line to adjust the FMU if you have a wideband because the FMU usually runs the car really rich in full boost. You can add 75hp at 5psi with a SN93 on a totally stock 5.0 with ease. Need help go to www.superchargerhelp.com and I(we) can help you out.

 

[daviszx3]

thanks for all the help the charger i got is a sn-89 not a sn-93 whats the difference? will i have any trouble making 5-6 psi also it comes with another pulley for more boost

 

[speedytang]

Same unit not any real difference. You should make 5-6psi without a problem. You just can not over spin the unit so 8psi is usually the limit on a stock car using a 3.75" pulley.

 

[daviszx3]

ok thanks does anyone have any pics of one of these installed or maybe some kind of directions also where does the mass air go?

 

[JBeezy53]

I have some pics on my other computer. Shoot me an email and I'll send them to you.

 

[speedytang]

If you need the factory directions send me a email and I will send them over.
[email protected]

 

[JBeezy53]

I just emailed you the pics I had.

If you haven't been on http://www.superchargerhelp.com I would go immediately, there is ALOT of info on there.

 

[speedytang]

Directions Sent

 

[daviszx3]

i got the pics and the directions thanks alot guys do you know if i need to use diffrent spark plugs

 

[daviszx3]

when i got to superchargerhelp.com and go to paxton and click on the sn series forum i cant find any info..

 

[JBeezy53]

You have to go to the bottom of the pag ad adjust the "display options" so that the post start at the beginning. Try this link:

http://www.superchargerhelp.com/for...1&pp=25&sort=lastpost&order=desc&daysprune=-1

 

[69clark]

Here is a pic of mine installed. Not a fox, but similar setup. I believe teh fox brackets are slightly different, but you still got the idea of placement and piping.