"free boost upgrade" from www.200sx.org - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Omega · 02-17-2002, 11:01 PM

taken from <a href="http://www.emergent.com.au/200sx/

3.17" target="_blank">http://www.emergent.com.au/200sx/

3.17</a> What's this about a free boost upgrade?
It's true.  You can get a 1-2 psi upgrade by removing the boost restrictor on the top of solenoid valve.  It is identified by a white band on the hose which goes from inlet pipe to the solenoid valve. This pipe is at the top of the boost control solenoid. If you don't want to cut the hose, just get a piece of 1/4" fuel hose the same length.

Remember to reconnect all hoses.  There is nothing left off or disconnected after this modification.  Take the car for a drive and watch your boost gauge.  Make sure there is no major increase or decrease in boost level.  If there is, stop and recheck your work!

One or two PSI might not sound much, but remember that the export-spec cars run around 10psi (0.7 bar), this is up to twenty percent, or somewhere about 8-10 kilowatts at the rear wheels.  Not bad for nothing!

http://www.emergent.com.au/200sx/images/boost_valve_2.jpg

Ok so here is my Q why is it restricted? What are the possible problems that emerge from it not being restricted? What is it actually doing and why is that good sorry I’m totally clueless about this.

02-18-2002, 12:46 AM

too much boost + bad gas = blown engine = warrenty claims = NISSAN doing CYA...

misnomer · 02-18-2002, 02:12 AM

Additionally, unless you have an SR in your '95, there's no point <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'> 240s are naturally aspirated, no boost, no PSI, no way to gain it by removing components.

02-17-2002, 11:01 PM	#1
Omega Zilvia Member Join Date: Feb 2002 Posts: 225 Trader Rating: (0) Feedback Score: 0 reviews	taken from <a href="http://www.emergent.com.au/200sx/ 3.17" target="_blank">http://www.emergent.com.au/200sx/ 3.17</a> What's this about a free boost upgrade? It's true.  You can get a 1-2 psi upgrade by removing the boost restrictor on the top of solenoid valve.  It is identified by a white band on the hose which goes from inlet pipe to the solenoid valve. This pipe is at the top of the boost control solenoid. If you don't want to cut the hose, just get a piece of 1/4" fuel hose the same length. Remember to reconnect all hoses.  There is nothing left off or disconnected after this modification.  Take the car for a drive and watch your boost gauge.  Make sure there is no major increase or decrease in boost level.  If there is, stop and recheck your work! One or two PSI might not sound much, but remember that the export-spec cars run around 10psi (0.7 bar), this is up to twenty percent, or somewhere about 8-10 kilowatts at the rear wheels.  Not bad for nothing! http://www.emergent.com.au/200sx/images/boost_valve_2.jpg Ok so here is my Q why is it restricted? What are the possible problems that emerge from it not being restricted? What is it actually doing and why is that good sorry I’m totally clueless about this.

02-18-2002, 12:46 AM	#2
Guest Posts: n/a	too much boost + bad gas = blown engine = warrenty claims = NISSAN doing CYA...

02-18-2002, 02:12 AM	#3
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,293 Trader Rating: (0) Feedback Score: 0 reviews	Additionally, unless you have an SR in your '95, there's no point <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'> 240s are naturally aspirated, no boost, no PSI, no way to gain it by removing components.