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01-24-2015, 05:59 PM | #1 |
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30+ HP with these items possible ?
Greetings,
If I use a decent under drive pulley, ECU tune, filter or air box change and exhaust. Can I except to see 35+ hp ? Perhaps not at the wheels - but at crank ? And do you have issues with AC or power steering, alternator since the under drive pulley is 'turning' those units slower ? Cheers, Merlin
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01-24-2015, 06:19 PM | #2 |
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Test pipes and tune add about 30-35HP .
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01-24-2015, 06:45 PM | #3 |
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when you say exhaust, what do you mean.
if you change the mufflers, there is not really anything to be gain. If you can the cats and add a tune. You will gain a lot. |
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01-24-2015, 08:08 PM | #4 |
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It might depend on what brand pulleys they are...I've had Turner pulleys since the spring and not a single problem...and yes tune pulleys and filter (going by claimed gains by the manufacturer) 30+hp
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01-24-2015, 08:12 PM | #5 |
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01-24-2015, 09:10 PM | #8 |
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Yes, but very little. Go MS pulleys, and call it a day.
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01-24-2015, 09:11 PM | #9 |
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errr..... Pulleys- 10whp, Intake/Filter- 6whp, Tune- 12whp. So roughly 28whp, with all three.
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01-24-2015, 09:31 PM | #10 |
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01-25-2015, 05:33 AM | #12 | |
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You can get dyno results to show better gains from an underdrive pulley by running a battery with a low charge which forces the alternator to stay connected regardless of the engine being at WOT. |
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01-25-2015, 07:21 AM | #13 | |
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If we added each individual "gain" from each part all of could reach 450 quite easily. Best bet, start small than upgrade as you get used to the power.
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01-25-2015, 12:13 PM | #14 | |
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01-25-2015, 12:41 PM | #15 |
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I think the numbers you quote are a bit overinflated, not necessarily by you since I assume you were going off of what the manufacturers report.
Also, I haven't seen a lot of evidence that these gains are cumulative. For example, I'm not sure that a tune or an intake by themselves will generate much increase at all. Put them together, though, and you will likely realize a small gain. Thus, rather than 10 hp for the intake and another 10 hp from the tune, it's likely you'd only see 10 hp for both together. I also suspect that a freer-flowing intake is not likely to help much on a stock car that has its primary cats in place. Those create massive amounts of back pressure. If the back pressure is high enough, I'm not sure "opening the window," so to speak, with an intake will do a lot to feed more air into the engine. You either need to reduce the back pressure (i.e., delete the primary cats) or use a method that can overcome the pressure (i.e., a supercharger). I do like under drive pulleys, to the extent that they may also allow the engine to rev a bit more freely by removing drag. If so (and I'm speculating that they do), that would be worth it aside from any increase in HP, in my opinion. |
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01-25-2015, 01:14 PM | #16 | |
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In other words how much BHP do these two ancillaries consume at max rpm if a mere 16% reduction is worth a massive 10whp? 62.5 whp? There are cars that have engines producing less power than that. |
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01-25-2015, 04:33 PM | #17 | |
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Cheers, Merlin
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01-25-2015, 06:06 PM | #18 | |
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01-25-2015, 06:10 PM | #19 | ||
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01-26-2015, 03:19 PM | #20 | |
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It is the concept as dynoing with 18" and 20" wheels - cars with no wheels won't accelerate faster or handle better due to less weight |
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