Changing Injectors

Has anyone changed the fuel injectors ?

They look buried and hard to get at!

Thanks - I'll check the manual!

yep Me on several occasions.

you need the intake manifold off the car as the guard bolts are hidden behind the tgv motors & oil supply pipes for the avcs

vulnax wrote:Has anyone changed the fuel injectors ?

Getting ready for the remap?

Cheers Rob, I had hoped to pull off the shields and move the hoses ( as on a classic! ) but don't fancy doing a manifold off job!
Looks like a garage job then...

Yep Paul, since I was running at 93% injector duty on AndyF map I got these ECUTek 800CC/min injectors... but not that easy to fit it seems!

Perrin 3 port will go on, and off a re-remapping we go ..

Hopefully we'll get a date shortly as the plugs and pump will be in this week and the 3-port and AEM CAIK will go on just before. I've been looking at the Perrin inlet pipe and they claim a drop of 250 rpm on spool up so that could suck me in before the map.
Paul.

The Perrin inlet pipe looks good, but may be a pig to fit - Scoobyclinic said they would recommend fitting one when changing the turbo etc.

Most of the forged / big builds I've seen on here have this inlet pipe.

Best I've seen for the inlet is £265 in the UK but there's a seller on e-bay that do them for £160 with express shipping, dependent on exchange. They do multi shipping rate that take it down to £149 for 2.

The video says about 40 mins to fit, just removing the intercooler. If you have to take your manifold off for the injectors it'll be easy for them to change at the same time.

Paul.

LOL, I suppose I'd want one, they do flow better - I think they are wider diameter than std., Make sure they have the end fitting to fit the AEM CAIK.

If you're going for one on import I'll go with you and have one too!

If you get any fitting instructions that would help

Cheers

Actually, did they have the Perrin catch cans too?

I'll have one in black!!

Fail to see how the hardpipe will take 40 mins to fit some how

the fuelpipes are bolted around the intake pipe so the only way to remove and refit is to unbolt them and pull the pipe out, but to get at the bolts the manifold has to come off. I can remove and refit a manifold in 1hr flat, it looks worse than it actually is.

remove intercooler
Remove airbox assy
wiring removed from avcs solonoids and sensors under engine
unplug the coil packs
Unplug the inlet avcs solonoids and sensors on top of engine
unplug the knock sensor and secondary airpump solonoids.
remove alternator and unplug water temp sensor/crank position/oil pressure wiring along with powersteering pump wire.
drain cooling system and remove header tank.
disconnect fuel pipes/ disconnect water hoses on throttle body. remove vac line for brake servo.
Undo hose clip on turbo inlet pipe, best practise is to remove the hex key from the front of the hardpipe on the intake and pull off the turbo
dissconnect the breather pipes ate the rear of the block
undo the 4 bolts on each side and lift off

should be like this when removed


then if you decide to strip it out then it will end up like this

Rob wrote:I can remove and refit a manifold in 1hr flat.

Think you've just shot yourself in the foot Rob! After your walk through last weekend I was going to do it myself but WTF, you may as well do it for me. Got a spare hour when you're up here for Time Attack?

Rheid wrote:

Rob wrote:I can remove and refit a manifold in 1hr flat.

Think you've just shot yourself in the foot Rob! After your walk through last weekend I was going to do it myself but WTF, you may as well do it for me. Got a spare hour when you're up here for Time Attack?

Sounds like a plan to me, May as-well do some mobile mechanics while I'm on my travels

the job looks and sounds worse than it is, Thats no joke either

A mobile Subaru mechanic sounds expensive

ghplumb wrote: A mobile Subaru mechanic sounds expensive

especially in my preferred choice of transportation Think it actually costs me to do the job's some days

Thats because your trying to haul that enormous Snap on toolbox round with you !
Just take what you need

or check if Prodrive Sold all those SWRT Trucks that were there

Rob wrote:Fail to see how the hardpipe will take 40 mins to fit some how

The video they show says 37 mins but when you read the fitting instructions that's with destroying the original pipe so manifold removal is not required.

https://www.youtube.com/watch?v=IbBUypkNGRY

http://www.perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint401.pdf

http://perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint400.pdf

vulnax wrote:LOL, I suppose I'd want one, they do flow better - I think they are wider diameter than std., Make sure they have the end fitting to fit the AEM CAIK.

If you're going for one on import I'll go with you and have one too!

If you get any fitting instructions that would help

Cheers

YHPM

Paul666 wrote:

Rob wrote:Fail to see how the hardpipe will take 40 mins to fit some how

The video they show says 37 mins but when you read the fitting instructions that's with destroying the original pipe so manifold removal is not required.

https://www.youtube.com/watch?v=IbBUypkNGRY

http://www.perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint401.pdf

http://perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint400.pdf

ouch thats just butchery at its best

I just love these "simple" jobs that get tricky!!

May have to pop up to Cumbria and see Rob do his stuff !!

Remove manifold,
Fit Inlet pipe
Fit injectors
Fit catch can
Replace manifold.

Should only be a couple of hours!!!

Only problem is ECUTeK tell me the ECU settings need updating ( simple scale setting and delay ) to suit the 800CC injectors before starting engine! So looks like a garage associated with a mapper / ECUTeK need to fit injectors.

you can run with the 800cc fitted prior to mapping, allthough will run in a richer state than before, just keep it off boost & the afr sensor does a pretty good job of trying to trim the fueling back to sensible limits.