andezzat
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/05 09:46:27
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And Dudeman, that could very well be part of the problem, and hopefully fix my crappy slow RPM drops when shifting.
How exactly do I fix that? Have to see a mechanic I suppose?
Thanks for the awesome responses guys, they're definitely shedding some light on the issue, and I actually have some hope of getting a decent intake now that I know where to kind of get the SARDS one from. I'll look into it soon once I've got some dough to spare :)
Keep the ideas coming!
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rikkir
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/05 10:05:35
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Admin
http://www.6gc.net/forums.ndex.php?showtopic=91467
MAF sensor: The MAF sensor is no different than any other MAF, but the BEAMS ECU treats it differently. The BEAMS ECU is incredibly finicky when it comes to the MAF and it has very tight tolerances. The BEAMS ECU relies very heavily on the MAF to determine the air/fuel ratio, and it was designed to work with the stock intake. If the MAF begins to malfunction, the ECU will trim fuel, causing your engine to run improperly. Unfortunately, this means that the ECU cannot cope with any other intake besides the stock intake. This will throw the MAF readings off, meaning you will not get proper air/fuel ratios and therefore cutting power, often significantly. The best alternative to the stock intake is the SARD Sports EX Plus intake, available from rhdjapan.com, but there have been several dyno charts showing gains by replacing an aftermarket intake with the OEM intake. You can buy just the Redtop intake lid, which has the MAF housing built in, and it will fit right on top of your stock intake box, giving you a full OEM BEAMS intake.
I'm pretty sure the Beams intake box is larger than the standard 3sge as I had to source a different larger air filter for my Beams, so you'll need the complete setup for it to work correctly. If you were coming to the Wakefield Park Challenge in January we could have tried swapping my intake setup into your car to see if it fixes the problem. Unfortunately Melbourne is a bit out of my way sorry.
Silver 1997 SW20 Bathurst with 
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andezzat
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/05 10:37:18
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rikkir
I'm pretty sure the Beams intake box is larger than the standard 3sge as I had to source a different larger air filter for my Beams, so you'll need the complete setup for it to work correctly.
If you were coming to the Wakefield Park Challenge in January we could have tried swapping my intake setup into your car to see if it fixes the problem. Unfortunately Melbourne is a bit out of my way sorry.
Yeah I figured that! That's okay, I appreciate the help anyway :)
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Dudeman
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/06 03:02:32
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andezzat
And Dudeman, that could very well be part of the problem, and hopefully fix my crappy slow RPM drops when shifting.
How exactly do I fix that? Have to see a mechanic I suppose?
re: the throttle butterfly - well you could take the intake hose off and have a look first at the butterfly and see if seems sticky when you open it up and let it close. That would give you a yes or a no to that theory. As for how to fix it? Well I'm sure I have read spraying some carburettor cleaner into it may do the trick - but I don't want to go suggesting things that may root your engine up. Someone that knows better may have an idea or two.
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just_ace
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/06 16:56:21
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Can of subaru upper cylinder head cleaner.
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andezzat
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/06 20:28:44
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just_ace
Can of subaru upper cylinder head cleaner.
Ah... Not sure where I should look for that? Ideas? I'm pretty much a noob and I don't have many tools or utilities that are car-related etc. With that said though, will definitely look into the throttle butterfly being sticky!
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just_ace
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/06 21:29:11
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Subaru parts service dept, $20
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Admin
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/07 09:55:46
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I wouldn't concentrate on that. Sort out your MAF sensor first and I think you'll find that all of your issues will disappear.
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just_ace
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/07 11:06:33
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Dudeman
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/07 11:49:34
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But looking at it is free and doesn't take much time.
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xez
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/07 18:27:12
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It's possible your VVT-i isn't working correctly either, although that would probably throw an engine check light I would think.
Without being able to find a super-rare factory SW20 BEAMS airbox, the SARD kit mister2 suggested might be your next best option...
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andezzat
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/08 21:05:45
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I'll see if I can clean the Throttle and possibly the ISCV as well. I'll also have a look at the MAF and will definitely get the SARD intake in the near future, as I'll need a decent intake anyhow. Not sure if I can find a spare MAF to quickly test with though, that might be an issue. Don't want to fork out money on a new one and find out that it still runs exactly the same :/ EDIT: Reason I want to look into the ISCV is because I found that it might be reason ( http://www.6gc.net/forums/index.php?showtopic=90718&st=0). It's also not too hard to service and/or replace by the looks of it. Also worth mentioning, I've had some very occasional issues where my idle isn't always ~850-900 RPM, but rather 1k RPM. It's not a huge difference, but definitely not consistent as it should be. I've read somewhere that the BEAMS should idle around 750 RPM.
post edited by andezzat - 2017/01/08 21:09:57
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Mrskylighter
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/08 22:12:24
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Can you post up some images of what your intake setup looks like? Do you have the SW20 S shaped black pipe with a pod filter on the end or the shorter Celica piping? Mr2 factory Beams intake:  Celica factory Beams intake: 
post edited by Mrskylighter - 2017/01/08 22:21:19
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Mrskylighter
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/08 22:13:58
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Here's what the Sard EX kit for the SW20 Beams looks like on the factory piping. If I was you i'd be buying that Sard kit as it comes with the critical part where the MAF bolts too. Then if you don't have the sw20 black S piping get the part number and order it online. 
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andezzat
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Re: Redtop BEAMS - Terrible Low-end torque and dead spots in RPM range
2017/01/08 22:43:34
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Yeah, I looked into the SARD intake kit, found a couple places online, this seems to be the best option thus far (inc. shipping to VIC, AU): http://www.rhdjapan.com/sard-sports-ex-plus-top-intake-toyota.html I have the shorter intake unfortunately (which makes sense as far as matters go, as the donor was an ST202) :( Which means I get even hotter air. I have the elbow from the engine, and then the MAF is there and my intake (Simple Pod Filter) is bolted straight onto that! I've tried my mate's intake, which is meant to be good, it ran through closer to the vent like the S piping, drove it around for 5 minutes after resetting the battery, not much of a difference, just sounded fancier xD Anyhow, here goes a pic... PS: I am not running that super long plastic pipe that goes from the MAF to the vent. I've removed it since, and I've barely noticed a difference btw. 
post edited by andezzat - 2017/01/08 22:46:50
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