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nickleman60
07-03-2006, 10:20 PM
can the boost controller be eliminated?i know they came on 89's but other years don't have them and i'd like to get rid of it but i don't know if you can

Phillio99
07-03-2006, 10:37 PM
mine is gone

SCMakeiv
07-04-2006, 01:41 AM
boost controller? this is the first ive heard of it...please enlighten me. can you turn boost down?

Tickler
07-04-2006, 01:41 AM
Why do you want to get rid of it?

rzimmerl
07-04-2006, 09:09 AM
Boost contoller??? the only thing that controls boost is the pulley ratios for the supercharger.

nickleman60
07-04-2006, 09:54 AM
on 89sc the boost vacuum line runs from the bypass diafram to a plastic box thing that's located on the drivers side up by the firewall.the box has 2 lines coming off of it,1 for the boost and 1 goes to another vacuum t-fitting.it also has a electrical connection on it.i want to eliminate it and run the boost hose to the inlet plenum likes all the other years.

nickleman60
07-04-2006, 09:56 AM
boost controller is the name of the part,not that you can set the boost to a certain level

trife86
07-04-2006, 01:21 PM
i belive hes talking about the boost solenoid. i think it was only only 89's and some 90's

nickleman60
07-04-2006, 02:04 PM
i did a search and yeah that's what you call it.

Young-SC-Owner
07-04-2006, 04:44 PM
is it this thing i have with the broken nipple?

birds4us
07-04-2006, 04:48 PM
No, that is for the EGR.

Young-SC-Owner
07-04-2006, 04:59 PM
chit, do i have to get another one then? how much for one?

birds4us
07-04-2006, 05:05 PM
If you plan on keeping the EGR, then yes you will need a new one.

nickleman60
07-04-2006, 05:12 PM
this is the boost solenoid

CMac89
07-04-2006, 05:28 PM
No, that is for the EGR.
Pretty sure that's the BAP sensor.

Just take the line off, leave it set aside, and go ahead and run the line from the bypass to the inlet plenum.

The way I did it.

Young-SC-Owner
07-04-2006, 05:28 PM
i would eliminate the EGR but i cant get it out of the exhaust manifold:mad: :confused: its not cooperating and what else would i have to do if i deleted it?

ThunderDave
07-04-2006, 05:37 PM
You need a plug for the exhaust, a block off plate for the plenum and a COS processor from a 90 SC without egr, unless you don't mind the CEL staying on.
http://www.sccoa.com/forums/showthread.php?t=79110&highlight=egr

Make sure you spray plenty of WD40 or PB Blaster on the tube fitting on the exhaust manifold.

I recently deleted mine, I'm just waiting for the processor to be delivered.

As for the boost solenoid, I had heard there was one on the 89s, I want to delete mine too if it will help performance. Is it supposed to limit the amount of boost or something?

rzimmerl
07-04-2006, 10:01 PM
learn something new everyday on this site. Didnt realize that some cars had a boost solenoid. I'll have to check and see if my 90 has it

Tony8470
07-04-2006, 11:10 PM
I was wondering what that thing was. Does it hold back any HP?

Jogi
07-05-2006, 01:17 AM
I think proper name is Air Bypass Valve solenoid.. Some other cars use it as boost controller too but in -89 SC case IMO it is just failsafe, nothing too important as it was deleted later on?!

Here is link for a car that uses it for air bypass and boost control.
http://www.geocities.com/MotorCity/7177/superchargerinfo.html <- see "air bypass valve section

Young-SC-Owner
07-05-2006, 01:20 AM
ill try that al it is is the bolt that threads into the EX manifold and the lil metal piece on the Plenum or wherever it is correct?

thirdbird
07-05-2006, 09:39 PM
Hey are there pictures of a bypassed vehicle, or is it really a no-brainer?

paul



Pretty sure that's the BAP sensor.

Just take the line off, leave it set aside, and go ahead and run the line from the bypass to the inlet plenum.

The way I did it.

Young-SC-Owner
07-05-2006, 09:42 PM
i will do it since the engine is out of the SC but like he said can we see some pics?:p

ThunderDave
07-06-2006, 02:27 PM
Yeah, just to make sure we don't pull the wrong line. :eek:

Micahdogg
07-06-2006, 04:24 PM
The little black box with broken nipple is called the "PFE Transducer". You can get them at Napa for about $65 new. There is a vaccum line that runs from the EGR tube to the nipple on that transducer and over time the exhaust heat makes the nipple brittle. If it doesn't break on its own, it usually brakes if you disassemble it at any point. And I've tried repairing them with glue, etc... but it never holds up.

As for the bypass valve solenoid...I had one and was never sure what the heck it did. I'm not sure that it hurts performance, but it certainly appears to be unnecessary. I left mine in place for years because I wasn't sure what it did. Recently it was removed when some madman was wrenching under my hood and kept coming up from the engine bay with two fists full of misc. lines, wires, etc....

Micah

Young-SC-Owner
07-06-2006, 07:01 PM
im just gonna take the EGR out screw the 65 bux lol:p :D

Micahdogg
07-07-2006, 10:04 AM
If you remove EGR, you'll have to leave that transducer box in the bay and plugged in. Of course you are still saving money because it doesn't matter if the bung is broke since it's no longer referencing anything. But don't yank that box...just the EGR valve itself and tube.

Micah