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Performance Discuss Engine, Suspension, Drivetrain, and all other performance modifications here. |
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11-04-2006, 12:04 PM | #1 | |
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Performance mods that DO NOT work.
Hey Guys,
As the title says, this thread is for performance mods that do not work. I'll go ahead and start out with a few. Feel free to add others. Maybe we can save people some money. 1) Turbonator 2) Electrical "Super Charger" 3) Tornado 4) Throttle body spacer on a vortec BTW, If someone wants to start a thread with mods that DO work, go for it . |
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11-04-2006, 02:27 PM | #2 | |
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Re: Performance mods that DO NOT work.
- ebay juice boxes
- hypertech/jet chips - Granatelli MAF (not worth the cost for very minimal gain) - fuel line magnets (clame to increase MPG) - true dual exhaust on 4.3 - descreening MAF
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2000 Chevy Blazer ZR2 Performance Mods: Numerous Suspension Mods: Some, but not enough Exterior Mods: Just Right 1987 Buick Turbo T Dark Red Low 11 sec sleeper .030 4.1 block, PT6262E, & other odds and ends.... My Cardomain Last edited by ZL1power69; 11-10-2006 at 06:54 PM. |
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05-06-2008, 03:10 PM | #3 | |
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Re: Performance mods that DO NOT work.
[quote=blazee]Hey Guys,
As the title says, this thread is for performance mods that do not work. I'll go ahead and start out with a few. Feel free to add others. Maybe we can save people some money. 1) Turbonator 2) Electrical "Super Charger" 3) Tornado 4) Throttle body spacer on a vortec What makes you say the Tb spacer doesn't work>>?? I put a poweraid spacer on my 1996 Jimmy (4.3 Vortec) and seen gains of about 3-4mpg alone!!! not to mention the mid range power just seems to pull forever now.... and it whistles like a turbo when it really starts drawing air. In my opinion not only do they work they kick your ass for 150.00ish. What are you basing this on? |
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05-12-2008, 06:08 PM | #4 | |
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Re: Performance mods that DO NOT work.
It's based on facts: The Ford 2.3 HSC (High Swirl Combustion) engine, the Honda CVCC (Controlled Vortex Combustion Chamber) engine, the Chrysler Hemi, and the GM Vortec engine, are all designed to do what the add on, aftermarket spacers claim to do, which is to thoroughly mix the air fuel mixture. The main difference is these engines do it in the combustion chamber on the compression stroke. FAR more effective and saves 150.00ish Whenever anything is installed in the air intake, the air flow is restricted which requires the engine to work harder, which reduces fuel mileage. The whistling noise is an indication the air intake is restricted.
The throttle body gasket is a very common place for a vacuum leak. Installing the add on spacer requires a new gasket. If your old gasket was leaking, replacing the gasket alone would gain more than 3 or 4 mpg. |
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05-13-2008, 01:35 PM | #5 | ||
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Re: Performance mods that DO NOT work.
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05-13-2008, 04:17 PM | #6 | |
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Re: Performance mods that DO NOT work.
The spacer is designed to create turbulence in the air inlet flow to help mix the air fuel mixture more thoroughly. Carbureted and throttle body injected engines could theoretically benefit from it. However, an engine with port injection, such as the CSFI and CMFI engines, fuel is injected at the intake valve, well past the spacer. Any turbulence created by the spacer essentially does nothing for performance, other than restrict the air flow. There may be a psychological increase in performance, but that's as far as it goes. I understand that everyone is entitled to their own opinion, in your original post you asked what this was based on, I gave you facts.
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05-13-2008, 10:27 PM | #7 | |
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Re: Performance mods that DO NOT work.
I'd have to agree with OM on this one. TB spacers on the 96+ 4.3 offer no performance advantage because the function the spacer is suppose to perform is already done by the engine during compression. Save the $70 and spend it on something else. The only spacer that could yield any performance gains on the newer 4.3 is the v-max spacer for the upper intake manifold.
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2000 Chevy Blazer ZR2 Performance Mods: Numerous Suspension Mods: Some, but not enough Exterior Mods: Just Right 1987 Buick Turbo T Dark Red Low 11 sec sleeper .030 4.1 block, PT6262E, & other odds and ends.... My Cardomain |
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05-14-2008, 10:53 AM | #8 | |
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Re: Performance mods that DO NOT work.
Well what you are saying actually makes perfect sense to me, it is unlikly the turbulance created by this spacer will reach the intake valves before it disipates completely. It just makes no sense to me how I can bolt this bad boy on, re use the gaskets and see a whack of gains. I know everything was in good order before I installed it because I just finished repairing the intake manifold gasket, so I had to buy an upper intake Fel-pro gasket kit.
Where the hell did the mpg and power increase come from, your guess is as good as mine :P Thanks for the info tho my buddy was thinking of putting one on his 97 Blazer, I think I'll tell him not to. I don't think im going to taking it off, since it doesn't seem to be harming the engine at all, maybe just my MPG due to more restriction like you said. I can't see this hurting my engine though can you?? |
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05-14-2008, 03:58 PM | #9 | |
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Re: Performance mods that DO NOT work.
It won't hurt the engine, the only thing it will affect is fuel mileage due to the added restriction. It's hard to say how much, but with fuel approaching $4 a gallon, it would be worth removing it.
Did you replace the intake gasket at the same time you installed the spacer? It's possible the intake gasket was leaking vacuum. That could explain the improvement in performance after replacing it. |
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05-14-2008, 04:29 PM | #10 | |
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Re: Performance mods that DO NOT work.
I slapped the spacer on about two weeks after the intake repair, It really seemed like it made a difference, it is possible it might actually perform to about 5-10% of what the company actually claims for my cmfi. This forum seems to be filled with a vast knowledge from many people, so I will take your word for it.
-Im going to leave it on just because it sounds cool. -Thank you again, this forum gives me hope for ''the plague'' my 1996 jimmy that is just hungry for parts. Last edited by JimmyRiggin'; 05-14-2008 at 04:31 PM. Reason: im an dolt and forgot it was central multiport fuel injection i put cmsi. |
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10-29-2008, 01:39 PM | #11 | |
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Re: Performance mods that DO NOT work.
i drive a 2001 olds Bravada with the 4.3 Vortec. I put the TB spacer, AEM Cone air cleaner and a Magnaflow High flow muffler. I put them all on at seperate times and noticed a significant boost from each. Now, it's probably likely that the 'power boost' from the TB spacer was 'psychological' but I agree with Jimmy Riggin'. It sounds cool! I know for a fact that the other mods I mentioned, helped. My opinion.
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~2001 Oldsmobile Bravada 4.3L Vortech V-6 Automatic AWD~ (Running) (Left hand drive) ~1997 Rover 820Si 1.9L DOHC Inline 4 Automatic FWD~ (Running) (Right hand drive) ~1992 Vauxhall Frontera 2.4L Inline 4 Manual 4WD~ (Running) (Right hand drive) |
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05-25-2009, 09:39 AM | #12 | ||
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Re: Performance mods that DO NOT work.
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