Nice link Hoser. Food for thought to say the least.
Homebrew FIPK, K&N Drop-in Filter, Deckplate, and cleaned MAF/TB = HP!
- Thread starter bamachem
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Interesting, from all points of view. I'm going to have to go under the assumption that any percieved gains by this mod are just that...percieved. The data completely contridicts the seat-o-pants meter reports from everyone who has done this mod (or some variation of it).
I like the added noise of an intake, personally...but not if there aren't any real-world gains to be had. Kinda glad I didn't do this now.
I like the added noise of an intake, personally...but not if there aren't any real-world gains to be had. Kinda glad I didn't do this now.
FullyLitLED
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Could be 10000% perceived gains in power...kinda like how I thought the added weight of sliders made my hundys ride cushier
But the sound is definitely improved...now to cure that lead foot!
And that, boys, is why I don't go around trying to find any excuse for "modding" my truck. I want to see real data when making changes of this nature. The fact that a guy with access to a dyno posted real data on the subject makes me wonder why you guys were so set on doing this. Those "squiggly" lines are the only thing that matters when they deviate that far from a "normal" power curve. What else would you want to see on a chart like that to convince you not to do this?...a plummeting one that drops to 0, 1 inch from the start of the graph paper?
Great article.
I'm all for the data and what the "sqiggly lines" represent...but...my tires squeeled from a dead stop after the deck plate mod. That was not possible before with my LC, believe me I've tried. The sound is a bit throatier, but that wasn't what I was looking for. I wanted to giddy up when needed and I have that now. If things change the deck plate gets screwed back in and life goes on. Skol.
FullyLitLED
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And you can't beat actual results vs. paper data!
Skol, did you do only the deck plate? Or did you add the straight intake as well?
It's so strange to me that you guys get these power increases, while the dyno charts are showing a horribly messy fuel trim. I think maybe we need to have someone else get their vehicle dyno'd just to rule out the possibility of one person's intake mods making things looks off-kilter. After all, these are home-made intake modifications, so any one slight variation could have a negative effect one one person's car vs another. Not saying that's what happened, but I'm not quite convinced that one dyno chart is all we should rely on when so many positive gains are being reported.
I'm not saying any one side is wrong, I'm just saying I'm a dummy and don't get how it's possible. We need more data to compare.
I'm not saying any one side is wrong, I'm just saying I'm a dummy and don't get how it's possible. We need more data to compare.
FullyLitLED
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I'm not saying any one side is wrong, I'm just saying I'm a dummy and don't get how it's possible. We need more data to compare.
I did this upgrade and drove the truck around, doesnt feel more powerful lol does sound different though
Funny, for a while I had a 2004 Z4. The 3.0 M54B30 is such a smooth and quiet motor that BMW piped a tail piece off their resonator to a blind fitting mounted to the firewall. The plastic tubing had various removable foam pieces that you could add/remove to enhance the sound in the cockpit. They call it the 'sound generator' mod. Z4-forum.com • View topic - Sound Generator Modification
LJ- Only added the deckplate. I am surprised that your only perceived gains are tonal in nature. Did you unscrew and remove the plate?
Fuzz- My thoughts exactly. Every truck will have different results. Then factor in altitude, fuel quality, dirty tbs/afs, etc., and variables however minute start to accumulate. Who knows maybe I'm the idiot, but I suddenly have a sleeper in my driveway.
Skol
Fuzz- My thoughts exactly. Every truck will have different results. Then factor in altitude, fuel quality, dirty tbs/afs, etc., and variables however minute start to accumulate. Who knows maybe I'm the idiot, but I suddenly have a sleeper in my driveway.
Skol
FullyLitLED
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Skol-Maybe I did gain performance but my foot isn't as heavy as everyone elses
I am more interested in seeing if I will improve my mpg's. I popped the plate back in before trying out the new cool sound without the plate, sounds better without it hhaha
Trying to find a 4WD dyno in ATL.
couple of things.
The other dyno was in 2WD.
Stock resonator
4" deckplate
Was the ECU reset? ( never confirmed)
How many runs? (3 I believe, it was installed for a dyno run then plugged)
So to say the deckplate+straight intake tube is pointless is a bit idiotic really. Yes, there is some good data saying it's worthless, but on other motors and airboxes. The Tundra guys saw a improvement on the same airbox/motor so don't jump to conclusion since this didn't work on a 17 yr olds Honda Civic.
So for those who have had the balls to do this mod ( for me it was curiosity) have said good things about it, so the fawk what it doesn't give you 50hp and a SBC sounding engine. It sounds good, response is nice and crisp and from a dead stop on the on ramp to 85 it does not sound like it struggles. I plan on 9 dyno runs with a few days of driving in-between for the ECU to settle down.
3 runs 100% stock
Drive 3 days
3 runs deck plate and stock resonator
Drive 3 days
3 runs with deckplate and straight intake tube.
couple of things.
The other dyno was in 2WD.
Stock resonator
4" deckplate
Was the ECU reset? ( never confirmed)
How many runs? (3 I believe, it was installed for a dyno run then plugged)
So to say the deckplate+straight intake tube is pointless is a bit idiotic really. Yes, there is some good data saying it's worthless, but on other motors and airboxes. The Tundra guys saw a improvement on the same airbox/motor so don't jump to conclusion since this didn't work on a 17 yr olds Honda Civic.
So for those who have had the balls to do this mod ( for me it was curiosity) have said good things about it, so the fawk what it doesn't give you 50hp and a SBC sounding engine. It sounds good, response is nice and crisp and from a dead stop on the on ramp to 85 it does not sound like it struggles. I plan on 9 dyno runs with a few days of driving in-between for the ECU to settle down.
3 runs 100% stock
Drive 3 days
3 runs deck plate and stock resonator
Drive 3 days
3 runs with deckplate and straight intake tube.
2000UZJ said:
I was thinking about what Fuzz said and came to the conclusion that unless everyone's mod is 100% the same, results will be all over the place. I am not doubting what the 100 owners are claiming, I just think that channeling air to the TB is greatly affected my relatively tiny deviations on how you fabricate and install your mod.
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I think your dyno idea is great and is the final word on the validity of the improvement.
Out of curiosity, did you read Hoser's link to the engineering of the resonator? Soarer - The Intake Resonator
The conclusion they came to was that the factory design was sound and that modifications resulted in decreased performance. Forced air and/or continuous flow benefits from large diameter, however the cyclic pulses of a NA inductions system benefit from a properly tuned induction system. This is no different that the critical need to have a tuned chamber on the exhaust of a dirt bike.
edit: this is probably obvious, but you know this only benefits at wide-open-throttle, right? At any other throttle position, the butterfly is intentionally reducing flow. So unless you're completely mashed down there is no benefit.
FullyLitLED
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One dyno location in Atlanta that can fit a 4WD vehicle the size of the LC. $65for 3 runs...
Jesus.
Who wants to help pay for this experiment?
I'm seriously broke but want to offer my vehicle and time for the mud group.
Are there atleast 10 mudders with the upgrade? I'm sure people dont mind chipping in $10 each to get the price of almost two runs
hoser
SILVER Star
I was tempted to measure/compare the internal volume differences between our stock resonator and the australian spec resonator (with the cyclonic filter) but didn't want to risk water getting stuck in there.
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2000UZJ said:
Wow, Deja vu! I could get the rear wheels to spin with 33's with the plate open and a straight pipe. Couldn't even come close in stock form. The low end torque is what you should look at on a dyno, not high rev HP.
Ok, so in reference to hoser's article. I have personal experience to "resonators" or plenums as they are called in the racing world. The first picture shows an intake on the back of our school's SAE formula car. As you can see, there is a nickle size restrictor just after the throttle body that then leads into the plenum. This plenum allows there to be a chamber of available air into the engine so that under hard acceleration the engine will not choke on the restrictor. This plenum has also been tuned to the engine (525cc). One WOT has been established and RPMs have increased, the plenum has less effect on the performance of the engine. It is during the low end operation at which it is beneficial.
The second picture shows a stock LX/LC engine and intake. See and similarities?
