January 30, 200719 yr Has anyone tried this control module before? http://store.summitracing.com/partdetail.asp?autofilter=1&part=VNM%2DV38%2D203&N=700+4294907499+4294907495+4294924929+115&autoview=sku Looks like it might be a good idea, but pretty pricey. Any info on these or another one like it?
January 30, 200719 yr Sure looks like nothing more than expensive crap. All it's doing is tricking the computer to think the engine is getting more/less air than it really is. That's not a good way to get power. It takes the right combination of A/F ratio and spark timing to make real power and be reliable. I wouldn't buy it. An open intake and exhaust would cost about the same and give you better performance.
January 30, 200719 yr I'm a true disbeliever (and don't have one of the cars it's supposed to work on), but for curiosity I took a look at the thing. The claim is 25% increase in HP over the 1,000-5,000 RPM range. Interesting... ...but not too likely. Energy produced is directly related to fuel burned. Since all the module connects to besides power and ground is TPS and MAP or MAF (according to the info at the website), the most the module could do is increase the fuel/air ratio. The module's application is for a '90-'91 manual trans Legacy. Unless those models normally run unusually lean in the 1k-5k RPM range, increasing F/A isn't going to help much. Going excessively rich won't improve HP, but it will kill your gas mileage among other things. Burning more fuel and air in the proper ratio can certainly provide more power, but that requires being able to get the mixture in and out of the engine faster. That could require freer flowing intake and exhaust, larger cylinder volume, or cramming more charge into the cylinders under pressure (that's what super-/turbo-chargers do). The control module can't do any of that. Anyone have a different "read" on this?
January 30, 200719 yr Author Actually I looked around and found info on legacy central about it. Looks like its a scam. check it: http://www.bbs.legacycentral.org/viewtopic.php?t=2246&highlight=venom+module
January 30, 200719 yr Actually I looked around and found info on legacy central about it. Looks like its a scam.[...] Not surprising; there are few, if any, free ($300?!) lunches. Subaru engineers may not get everything right, but missing on HP potential by 25% would be quite a stretch. Don't forget, by definition, "venom" = "poison".
January 30, 200719 yr It's a higher tech sham then whats on ebay. though i am surprised the Summit is carrying it. nipper
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