Im about to put a manual boost controller on my 300zx now so i can up the boost a little until i get an electronic controller. Can anyone tell me where to put this?

 

I know it goes on the pipe between the housing and actuator but having two turbos not sure how this works, presumably the pipes are joined so i only need one?? If so where abouts is the pipework located that i can reach easily!?!?!?

Have you fitted an induction kit yet, and do you have a new chip for the ecu?

 

If not, I would suggest you sort these things out before upping the boost. I would also recommend that you check that the car is healthy enough to up the boost otherwise you could run into some serious problems.

 

Andy duff wrote a guide here .. http://www.300zx.co.uk/forums/showthread.php?t=36179

 

I wouls also recommend an electronic boost controller rather than a manual one .. more control and safer IMO.

 

HTH

I'm in the same position as you Finn...

 

i'm not sure where to put the mechanical boost controller...with two turbo's etc..

 

everyone says you'd need an accurate boost guage before you start and see what the car's running at the moment and increase it as required!

 

I have a feeling you have to put the boost controller at the back of the engine where the T pipe is...one pipes from the wastegate actuator i think and the other's from the source. not sure.

 

someone help!

Stick it in the bin, just use boost jets if you really have to. Otherwise I'd just wait & save up the £150 for an EBC

Stick it in the bin, just use boost jets if you really have to. Otherwise I'd just wait & save up the £150 for an EBC

Excactly!! :bow:

manual boost controler fit s very nicely in the bin. these things dont control boost accurately and will end up doing a lot of damage to your engine.

manual boost controler fit s very nicely in the bin. these things dont control boost accurately and will end up doing a lot of damage to your engine.

 

oh yes i carefully and painstakingly installed it in the bin and the results are spectacular. many thanks. Im sorry used to dodgy RS Turbos hat it doesnt matter whether yo use a manual valve or get your nan to sit on the actuator. i will buy electonic one i recon (boost controller that is, not nan).

where can i get boost jets from?????

 

and doesn't a mechanical boost controller effectively do the same thing as boost jets???

I would personally recommend a good aftermarket boost guage before you start playing at all with either manual or electronic controllers.

yeah, i've got a boost guage which accurately reads the pressure but still not sure where to place the boost controller!

 

i was told that electronic boost controllers are more complicated to install and therefore more likely to go wrong? either way would i need two boost controllers for each turbo?

no mate just the one controller will do ;)

theyre only harder to install (than jets) cos they need to be hooked up to the car (boost solenoids under bonnet, and power obv!) although i dont know exactly how.

theyre certainly not more likely to go wrong - theyre cool bits of kit that give great boost, great control, and when used wisely are less risky to use than jets/manual controllers that tend to spike/overboost.

still got no idea where my manual boost controller should go! plus i don't really don't want to bodge it either!

boost jets give a more consistant control over boost, manual controlers will cause boost spikes you can set them and once set they will regularily let your boost go way over what you set it at, with boost jets youve still got ecu cotroling safety boost etc thats why jets are better than manual controllers.

any idea where i can get jets from?

i'm about to install my manual boost controller...can anyone tell me if i need to remove the solenoid plug on either side of the engine to reduce boost spikes?

was told i do but not sure exactly where they are.

On a similar topic, i am about to get my Greddy Profec IIb installed by zedworld. Im told i can get it to 14psi 'safely'. I have a stock zed engine wise. What can i fit so the engine is utillising the extra boost better?

ps i wont make a habit of going to 14psi lolz

I killed my first zed by not understanding enough about what was going on with the boost. Have it very clear that if you are boosting too high without knowing it you WILL destroy your engine. Boost jets IMO are shite, and def shouldn't be installed without a good boost gauge and plenty of caution. Whats worse: a few hundred for an electronic boost controller or a few thousand for new pistons/rings/gasket/labour etc.

what's boost jets IMO?

do i need to remove the solenoid plugs?

most boost jets are just mig welding tips mate you get them in different sizes ie 1mm, 1.2mm etc dont remember what size gives you what psi boost do a search on boost jets and that will tell you theyre only about 50p each and you need 2 one for each turbo.

Boost jets are basically mig welding tips, available

from most hardware stores, i had 1mm in mine, giving

12psi. They fit in the actuator pipes.

You may want to consider having the ecu 'chipped' too.

As previously said, ensure the engine is running sweet, otherwise

it will inevitably go, BANG! :(

wow, ok i'll go down to my local hardware store tomorrow!

1mm should be the right size? obviously depending on the size of the actuator pipes.

i'm having the ecu chiped by andy next week! so i'll be careful until then.

Ad spanner and stir....

Some of of us here who have removed our AIV's now have an AIV solenoid valve sitting in the engine bay doing sweet FA. I'm trying to get my head around making an electronic boost switch out of mine by having it in stock boost in one position and then having a mig tip in the second vacuum output hose. thus allowing you to select a slightly higher boost when required. is there a way to do this with just one solenoid valve as after studying the vaccum line diagram in my tech manual it seems that the vaccum lines to each wastegate are completely independant of each other.

I promise to do a full photographic write-up if i can get this to work as i think it's quite a neat idea/use of a dormant bit of engine management. :)