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#136
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Re: Remote Mount Turbo
Are you using the stock MAF? If so how much air flow can the stock MAF correct for before it maxes out?
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#137
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Re: Remote Mount Turbo
Use a Z32 MAF.
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1992 Pearl White LS-L "Ruslana" #4946 - 180k on body, 95k on engine. Mods: ECU bead crush, 15 min mod, 20 min mod, drilled/slotted rotors & Axxis ceramic brakes, SS lines, 17" Evoke F1 wheels, XS-HF137 Sony Xplod speakers, 6000k HID's (lows & fogs), resistor mod, 1½" Sleek Spoiler mod, custom exhaust by svxfiles, '02 WRX aluminum racing radiator by svxfiles, Summit Racing 400# x 300# springs w/ Koni's by svxfiles, ClassGlass fiberglass hood /w scoop, Nevin's rear sway bar, '97 grille, phenolic spacers, custom LED interior lighting, custom paint. †"War doesn't determine who is right, only who is left"† Work to be done: Tinted windows, clear/LED tail lights, tailbar mod, "Power Mode" mod, Supertone horns, clear corners & headlight lenses, 2 pc splitters or custom bumper, Alcyone side skirts, TruSpeed Stage III SVX Intake, Hydra, 4.44 tranny swap, JDM auto folding side mirrors, engine rebuild, super charger, STi seats, bone leather interior /w SVX emblem, dash overhaul, SVX decals, paint (stock color). Total cost?: 22k At least it's going down..
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#138
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Re: Remote Mount Turbo
Thank you.
I've read through this thread before, but that was weeks ago. Slated to do it again here shortly. |
#139
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Re: Remote Mount Turbo
ok so it's time for a much needed update with a new problem, hopefully an easy one to solve though. I got my aluminum pipe in and have been running around getting clamps and hoses and mocking stuff up, cutting, fitting, cutting fitting, etc. etc. On to the pics.
Okay here I used some high temp RTV to attach the MAF to an adapter so it would seal up. Here it is going together with the adapter and some hoses in preparation for the aluminum piping. My first attempt to get the MAF mounted and get the tubing mounted. My second attempt to mount everything up. I scrapped the first attempt because the pipe was hitting the strut mount and the noise of it vibrating with the engine running would have made me want to drive off a cliff.
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out |
#140
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Re: Remote Mount Turbo
As of right now with my current set up, the MAF is within an inch of the stock placement and the TB. I measured the stock intake duct and came up with about 20 inches distance between the MAF and the TB. My current setup is around 17 inches plus another 2.5-3 inches for the hose, so it's basically stock distance from the TB.
The problem is I cut the big elbow off the intake ductwork and when I fired it up for testing, it is acting like someone is unplugging the MAF, it starts and runs for a second then stalls. I had the big hose blocked off and then I decided to unplug it and let it be a HUGE vacuum leak, it ran better for about 2 seconds and then stalled out. I am already devising a plan to re use that part of the duct work and extending the hose, but I am looking for some sort of input on it, would this be cause of the stalling? Here are some pics. Here is the hose in question Here is the ductwork piece I cut out and am most likely gonna re mount/ re duct it back in. This is where the hose connects to on the underside of the Throttle Body More pics will come tomorrow as I continue to make progress on this. The way everything is oriented the MAF is located just above the CAT on the passenger side, I will wrap the CAT to keep the heat down and that will be the only spot where the intake piping will come so close to the exhaust.
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out |
#141
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Re: Remote Mount Turbo
I don't know if I brought this up before or not, but I just realized something. If the compressed air from the turbo to the intake is too hot, the MAF won't work right. So some kind of intercooling is a must.
Yes, that big line is the feed for the idle air control valve. The car won't idle without the idle air control valve getting metered air... Basically you need to put a nipple or something in the shiny pipe between the MAF and the black box that feeds the two throttle bodies, and connect that to the IACV feed.
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album Last edited by icingdeath88; 05-03-2012 at 06:11 PM. |
#142
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Re: Remote Mount Turbo
Quote:
As far as the hot air throwing off the MAF I figured that as well, being as the hot air won't cool the wire down as well as cool air would, but to combat this I will wrap the exhaust where it comes closest to the intake pipe. I already have a plan to re duct in the piece for the idle air hose, I will lengthen the hose to accommodate the new location of the nipple. Here are a few more pics of the mock up. more to come tomorrow as the progress continues. Here are some pics of the new MAF location mocked up Here are some pics of my gauges cluster getting prepped for the gauges. Here is the front of it
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out |
#143
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Re: Remote Mount Turbo
Good work,
I'd be surprised if the air would be too hot for the MAF just after startup and on idle conditions. The compressor does no work at that point. I would start by plumbing metered air to the idle control and keep the MAF where you had it first. I would think the MAF signal is compensated for ambient temp - what the range is, that I do not know. Tapani |
#144
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Re: Remote Mount Turbo
Quote:
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out |
#145
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Re: Remote Mount Turbo
In regards to the MAF and heat, its not the heat from the exhaust you're worried about. It is a good idea to wrap it/heat shield the MAF/intake, but much of the heat in the intake charge comes from the compressor itself as compressing air always creates heat. Although the length of intake piping may conduct/radiate enough heat away since its exposed to airflow under the car. If so, then its a non-issue.
cheers -Evan |
#146
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Re: Remote Mount Turbo
Quote:
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Maybe one of the air-to-water ones from frozenboost.com can be put along the intake pipe under the car. Like this: http://www.frozenboost.com/product_i...5616c2d4781699
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#147
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Re: Remote Mount Turbo
Quote:
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I would wrap any exhaust piping that comes close to any intake piping to keep that heat in, helping the turbo and keeping heat soak from the intake. Use a turbo blanket and as icing said use a bypass instead of a BOV because if your ecu already thinks that air is on the way into the engine it will cause the mix to be incorrect until the O2 sensor can tell the ecu that its incorrect. |
#148
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Re: Remote Mount Turbo
Quote:
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#149
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Re: Remote Mount Turbo
Ah, yes reread what you wrote, and if the maf is before the turbo a bypass, as it is now it shouldnt make a difference as long as the valve is ahead of(in the flow) the MAF
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#150
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Re: Remote Mount Turbo
Ok so for some more updates. I have everything plumbed from the turbo to the intake manifold. Originally I wanted to keep the MAF about the stock distance away from the TB, but it was proving to be a bit of a headache so I have moved it closer to the TB. The car idles a bit rough now, kinda rhythmically bouncing from 750 -500 rpms. I am not sure if it is because of the new MAF location, or because the piping into the air box does get pretty warm, so I may end up wrapping that portion of it as well. here are a few pics.
This was the 3rd attempt at the air box. This was the first attempt at plumbing from the "air box" to going under the car This was the final product, I removed the RUBBER 90* and replaced it with an aluminum 90* I have to get some plumbers tape to support the piping because it hangs a bit low right now, and run a vacuum line from the BOV to the intake. I will be knocking that out here in a few hours because it is too hot and I am to sun burnt to do it now. so a few more hours, let it cool down outside, and I will post up some pics of the rest of the piping and a functional BOV.
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out Last edited by Subaru Alliance; 05-06-2012 at 10:57 AM. |
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