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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Fri Jun 16, 2017 4:51 pm 
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Vehicle: MY06 XT - Black

Posts: 2166
Location: Canberra
Are you already on E85?

I think even Injector Dynamics don't recommend ID1700's for stable idle on 98. On E85 on the other hand...

I reckon you'll need to swap out for ID1300x and if needed, do what Bob mentioned and add auxiliary injectors if you need the high load headroom. There must be an off the shelf manifold with aux injector ports available?

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Fri Jun 16, 2017 7:54 pm 
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Vehicle: Evo IX GT wagon

Posts: 5248
Location: ACT
No not on e85 tune yet. Trying to get the 98 tune right first.
But it idled fine and was tuned without issue with the Haltech Platinum Pro ECU, I don't care so much about rock solid steady idle but the AFR at idle go up and down too much.

The only other thing that has been done (engine wise) was replacing the Aeroflow (Bosch replicas) with genuine Bosch 044 pumps and a Fuel Lab FPR. I wonder if using a Hobbs switch to regulate when one or two pumps are running.

Also a mate of mine has the same ID1700 injectors on his evo 7. His engine is also 2.3L stroker on a flex tune (Benchmark) controlled by the OEM ecu. Doesn't suffer with my issues.

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Fri Jun 16, 2017 9:13 pm 
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I Say: Car mods are like OddBodz, you got to collect them all! -------------------------------------
Vehicle: MY05 STi swapped sled

Posts: 17175
Location: Spearwood Perth WA
Do you have a fuel pressure sensor? Are you able to log it? Even if only temperorily hooked in for the tuning?

I dont think your issues will be from having too big injectors. Ive been in dazs car and he has something like 2000cc injectors and it drove fine.

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Fri Jun 16, 2017 10:01 pm 
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I Say: Back in the Game.
Vehicle: Blue MY16 Ts Sti foz

Posts: 14632
Location: Sydney NSW
Flysti runs 2000s as well... and runs ok on standard ECU but on E85 only

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Sat Jun 17, 2017 1:35 am 
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Vehicle: Evo IX GT wagon

Posts: 5248
Location: ACT
Yes I have a fuel pressure sensor close to the FPR. My dash arrived back from Racepak USA today so I can log it Bram.
I had Bosch 2000cc injectors up until 8 months ago too. Tuners did not have a problem with them.

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Sat Jun 17, 2017 11:28 am 
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I Say: Car mods are like OddBodz, you got to collect them all! -------------------------------------
Vehicle: MY05 STi swapped sled

Posts: 17175
Location: Spearwood Perth WA
XT666 wrote:
Yes I have a fuel pressure sensor close to the FPR. My dash arrived back from Racepak USA today so I can log it Bram.
I had Bosch 2000cc injectors up until 8 months ago too. Tuners did not have a problem with them.

Cant you do it via the ECU ?

My Link does it. (Can even be setup to use measured fuel pressure VS manifold pressure in the fueling calculations. So even if pressure does vary, the ECU adjust and the engine always gets the correct fuel volume.)

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 Post subject: Re: Evo IX GT Wagon - Why won't it work?
PostPosted: Sat Jun 17, 2017 8:29 pm 
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Vehicle: Evo IX GT wagon

Posts: 5248
Location: ACT
Bram wrote:
(Can even be setup to use measured fuel pressure VS manifold pressure in the fueling calculations. So even if pressure does vary, the ECU adjust and the engine always gets the correct fuel volume.)


I like the sound of that.

Yes my ECU can log too but the dash has something like 4GB card in it.

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 Post subject: Re: Evo IX GT Wagon - Aero Part 1
PostPosted: Sun Jun 18, 2017 1:41 pm 
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Vehicle: Evo IX GT wagon

Posts: 5248
Location: ACT
Recently I bought some Carbon Fiber side skirt extensions. They were easy to install as most of the holes were already screw holes in the OEM side skirt. However there are two extra holes in the side skirt extension compared to the OEM side skirts, so I drilled two extra holes in the OEM side skirt so I could use every available mounting points. I replaced all the screws with new zinc plated screw that were slightly longer than the OEM length.

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Looks good the the CF spats.

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 Post subject: Re: Evo IX GT Wagon - Aero Part 1
PostPosted: Sun Jun 18, 2017 1:42 pm 
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Vehicle: Evo IX GT wagon

Posts: 5248
Location: ACT
VOLTEX and Beatrush deliveries :)

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I found a genuine VOLTEX Carbon Fiber rear diffuser "in stock" in Australia from Wei @ VisionR. I believe buying from Japan can take six months as lots of Voltex parts are made to order and they are very busy. Cheaper through VisionR too when you consider shipping, import fees, GST etc.

Voltex ER-1 Rear Diffuser

Instructions all in Japanese

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To make the trial fitting easier I used a mate's hoist.

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The diffuser is actually made for the Evo IX Sedan and as the Evo wagon's rear bar is a squarer shape and about 40mm longer I was a bit worried how the install would go. The first issue was the diffuser touching the muffler as the muffler was a bit crooked. I refused to trim the Voltex diffuser, I've seen people do this before but it weakens it and is not necessary. So I cut the exhaust pipe and repositioned it into a new exhaust flange and Mig welded it up. Great! Now the muffler is straight and has diffuser clearance.

The front of the diffuser was a perfect fit onto the car's chassis. The sides of the diffuser fitted perfectly on the sides of the rear bar too. WIN!

The next issue, which I expected would be a problem, was due to my Carbon Fiber cover that sits on top of the JDM evo 9 rear bar. Its carbon fiber "strakes" which are a similar shape to the oem bar sit down a bit lower than the bare OEM bar so I had to modify 4 of the Voltex attaching brackets.

Pic below shows the diffuser attached but not aligned properly yet. And then I ran out of daytime.

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So to continue the install the following day in my garage.

I attached the modified hanger brackets to the Voltex diffuser with bolts and to the car with duct tape. I then removed the bracket bolts from diffuser and lowered the diffuser from the car leaving the brackets attached to the car with duct tape. Now I have room to drill through brackets and into the rear bar & its steel reinforcement. Next I bolted the brackets securely to the car with stainless socket head screws and nyloc nuts.

Then I put the diffuser back on the car using all mounting points. I used stainless fasteners everywhere and domed nuts on the diffuser to hanger brackets bolts here:

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Done. It is a little rock catcher though. I need to address this. Maybe some mesh on the front edge of the diffuser will help to stop the rear tyres filling the diffuser with gravel

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 Post subject: Re: Evo IX GT Wagon - Aero Part 1
PostPosted: Sun Jun 18, 2017 1:55 pm 
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Vehicle: 02GT/6MT/Modtown

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Location: SE MEL
Geebus that's perty.

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