boost control solenoid

Post by **XtremeHKS** » Tue May 11, 2004 9:29 am

do i need it?

Post by **LoserbabyS13** » Tue May 11, 2004 9:29 am

I have heard that it is not needed. I am not using it on my setup.

Post by **nab911** » Tue May 11, 2004 9:29 am

I just took mine off...

Post by **USDM_OneVia** » Tue May 11, 2004 9:29 am

That little valve thingy that mounts up under the ignitor?

First thing to hit the trash when I got my motor.....

Joe

Post by **datsunboy** » Tue May 11, 2004 9:29 am

no!don't throw it away!you don't need it.....but if you go have a look at buying a electronically adjustable boost setup from "Link", then you will notice that it is the EXACT same solenoid!and they charge $297NZ for them.

If you don't want to use it for anything...you could at least sell it.

I'm using mine for electronic boost control

Post by **XtremeHKS** » Tue May 11, 2004 9:29 am

datsunboy wrote:no!don't throw it away!you don't need it.....but if you go have a look at buying a electronically adjustable boost setup from "Link", then you will notice that it is the EXACT same solenoid!and they charge $297NZ for them.

If you don't want to use it for anything...you could at least sell it.

I'm using mine for electronic boost control

Doesen't it induce F/C?

Post by **datsunboy** » Tue May 11, 2004 9:29 am

Post by **datsunboy** » Tue May 11, 2004 9:29 am

Fuel cut?I've re-programmed my ECU to get rid of fuel cut, and installing a Z32 MAF

Post by **XtremeHKS** » Tue May 11, 2004 9:29 am

datsunboy wrote:Fuel cut?I've re-programmed my ECU to get rid of fuel cut, and installing a Z32 MAF

yeah fuel cut

Post by **Jezz_s13** » Tue May 11, 2004 9:29 am

it's not a boost solenoid, the CA didn't have any boost control other than the actuator.It's a hot start solenoid that raises the fuel pressure a bit when hot for starting. You don't need it though, ditched mine eons ago.

Post by **datsunboy** » Tue May 11, 2004 9:29 am

exactly what it was....but I re-used it for boost control

Post by **float_6969** » Tue May 11, 2004 9:29 am

Jezz has it right. Mine was bad when I got the car and I ditched it. No problems starting when it's hot. It still doesn't like to stay running when it's real cold.

Post by **datsunboy** » Tue May 11, 2004 9:29 am

I know that it came factory for the fuel pressure reg, and that you don't need it.but all it is, is a 3 port vacumn solenoid. which can be very easily wired up to control boost electronically

Post by **float_6969** » Tue May 11, 2004 9:29 am

Do you have a diagram? Are you using a pressure switch of some sort? It's not that I don't believe you, I just want to understand.

Post by **datsunboy** » Tue May 11, 2004 9:29 am

ok, I'll draw one up tomorrow when I have some time.I'm using a boost pressure sensor that I got with my digital goost gauge. but before that I was just going to get a cheap MAP sensor off a Honda ( only because most honda's use a MAP sensor ), which is cheaper than buying after market.then goes to a Op amp ( I think, my electoncis tutor is designing the IC stuff for me ), and a Trim-pot to adjust the boost pressure, using your boost gauge to tell you what boost its set to

Post by **datsunboy** » Tue May 11, 2004 9:29 am

the sensor can just be any Pressure transducer that you can find cheap

Post by **float_6969** » Tue May 11, 2004 9:29 am

how did you build the amp? I think I understand how it works, but I'm kind of a visual person. If you have/can make a wiring diagram, that would do me wonders. Thanks!

Post by **datsunboy** » Tue May 11, 2004 9:29 am

the values of R1,R2, and VR1 depend on the pressure transducer you use.The transducer I am using gives 1.98V out at atsmopheric pressure.

Post by **Notchbackca** » Tue May 11, 2004 9:29 am

if you are putting a Z32 maf on then fuel cut is the least of your worries... boost cut is gonna hit you the second you try to turn the boost up tho(I know it doesn't cut boost, but thats still what its called)

Post by **datsunboy** » Tue May 11, 2004 9:29 am

and how how is boost cut removed?

does that pic in my last post work for anyone else?...it worked before, but doesn't work for me now.if it doesn't work, send me an email at... [email protected] and I will send it on

Post by **biosehnsucht** » Tue May 11, 2004 9:29 am

you have to copy paste it i nbrowser so it'll show, geocities doesn't like outside linking, then it'll keep showing until you reopen the browser (or it's been awhile).

I tried to resave it and attatch in-thread using the board but stupid 300x300 limit..

Post by **Notchbackca** » Tue May 11, 2004 9:29 am

3690h-369Fhare the address lines for boost limit3F40h-3F4Fhthat is for ttp-max which you might also need to adjust

Post by **biosehnsucht** » Tue May 11, 2004 9:29 am

What is TTP Max exactly? I saw that in the adr files for the CA

The boost limit address you give is called 'AF Limit' in the address files from Romedit, I was wondering what that was for.

Post by **biosehnsucht** » Tue May 11, 2004 9:29 am

I redid the schematic so it'll fit in the forum builtin image gizmo

Wow, didn't realize how small it was until I posted it, since I was working with it zoomed in lol. Might need to zoom in ... esp. to see the diode there ! hehe

datsunboy wrote:the values of R1,R2, and VR1 depend on the pressure transducer you use.The transducer I am using gives 1.98V out at atsmopheric pressure.

Post by **datsunboy** » Tue May 11, 2004 9:29 am

lol....cheers...was just trying to re-do it now, but I only have paint.that black triangle in there is a Op Amp by the way

yes...theres TP limit on my romedit for lines 3690h-369Fhand the TTP max for lines 3F40h-3F4Fh.how do we adjust these to remove boost cut?

boost control solenoid

boost control solenoid

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums