Anyone have a stock vs. intake dyno?
09-12-2006, 10:17 PM
#1
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Anyone have a stock vs. intake dyno?
Does ANYONE have dyno results for a stock intake vs. aftermarket intake? I just read over all the threads of everyone arguing over which intake is best between stock, HAI, and CAI. I searched and have not found one dyno showing gains or losses of any intakes. I have a HAI and some people claim that they lose horsepower in the low end and gain in the upper end and it is the opposite with a CAI. Then others say that the stock intake is the all around best as far as performance goes. I see all these arguments about them yet there are no proven dyno results. When I installed my HAI, I can't say I noticed any loss in the low end rpms but also didn't really notice any gains in the upper rpms on the butt dyno. Tomorrow at school, i'm going to do a run on my car with the HAI then install the CAI and see what happens but I don't think there will be much of a difference since the hood will be open on both runs. Unfortunately I don't have my stock intake so I can't do a run with it. What I'm really trying to find is a stock vs. intake dyno.
09-13-2006, 06:23 AM
#2
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That is because most of the information on this forum is based on the butt-dyno. Is that a bad thing ... yes. Are people going to go get a $60 dollar dyno after spending 60 on the intake or 200+ on the exhaust ... NO. It is not economical to get a dyno when you get small mods. It is all about the dyno with 3.5, DEK, 00VI, etc
09-13-2006, 06:57 AM
#3
Originally Posted by NYC32798
Does ANYONE have dyno results for a stock intake vs. aftermarket intake? I just read over all the threads of everyone arguing over which intake is best between stock, HAI, and CAI. I searched and have not found one dyno showing gains or losses of any intakes. I have a HAI and some people claim that they lose horsepower in the low end and gain in the upper end and it is the opposite with a CAI. Then others say that the stock intake is the all around best as far as performance goes. I see all these arguments about them yet there are no proven dyno results. When I installed my HAI, I can't say I noticed any loss in the low end rpms but also didn't really notice any gains in the upper rpms on the butt dyno. Tomorrow at school, i'm going to do a run on my car with the HAI then install the CAI and see what happens but I don't think there will be much of a difference since the hood will be open on both runs. Unfortunately I don't have my stock intake so I can't do a run with it. What I'm really trying to find is a stock vs. intake dyno.
09-13-2006, 11:51 AM
#7
Not sure if this is going to help or not, but here is Injens dyno tests with their CAI installed on a 4th gen max.
http://www.injen.com/webpages/testin...les/RD1925.jpg
http://www.injen.com/webpages/testin...les/RD1925.jpg
09-13-2006, 12:00 PM
#8
I have a comaprison with my A33B... I know I know, it's the 4g forum, but food for thought.
If you're really serious about modding then you'll find ways to find data that intakes do work, but most on here are too cheap to spare any $$.
I can't see why they would not want to verify that they have increased some performance aspect on their car after spending money on it soley for that purpose.
There are other ways to know if an engine (not a pulley) mod worked simply by data collection vs dynoing, sure it costs money, but hey you just spent 60$+ on an intake, and now you're too cheap/broke to spend on something to prove it worked...
Another reason why people rely on the butt dyno, because they feel as if because they spent money on it, they're golden.
Whatever makes you sleep at night... I like hard facts & data.
If you're really serious about modding then you'll find ways to find data that intakes do work, but most on here are too cheap to spare any $$.
Originally Posted by scrhale
Are people going to go get a $60 dollar dyno after spending 60 on the intake or 200+ on the exhaust ... NO.
There are other ways to know if an engine (not a pulley) mod worked simply by data collection vs dynoing, sure it costs money, but hey you just spent 60$+ on an intake, and now you're too cheap/broke to spend on something to prove it worked...
Another reason why people rely on the butt dyno, because they feel as if because they spent money on it, they're golden.
Whatever makes you sleep at night... I like hard facts & data.
09-13-2006, 03:49 PM
#10
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Ok I just got back from school and found something a bit interesting. Unfortunately I do not have a scanner so I cannot post the sheet itself. I used a brand new k&n filter that came with the CAI on both runs and yes it is a true k&n filter and not the crappy ones that come in the ebay kits. The dyno used was a dynojet.
Conditions: 79.27 degrees, 29.82 in-Hg., Humidity 29%
HAI: HP: 170,94 Torque: 179.54
CAI: HP: 172.53 Torque: 178.46
As stated you probably can't really tell if there are gains with a CAI on the dyno because with the hood open the temps. are basically the same. This is what surprised me. We decided to pull the filter off just for fun to see what would happen on the CAI. Here are the results:
No Filter: HP: 177.15 Torque: 185.59
That came as a surprise to me. I guess k&n filters aren't that great after all. The thing that put a smile on my face is that I made those numbers with just a y-pipe and intake on an engine with 212,000 miles. Another funny thing was people under estimated the max and thought i'd pull 150 at the most. But I proved them wrong.
Conditions: 79.27 degrees, 29.82 in-Hg., Humidity 29%
HAI: HP: 170,94 Torque: 179.54
CAI: HP: 172.53 Torque: 178.46
As stated you probably can't really tell if there are gains with a CAI on the dyno because with the hood open the temps. are basically the same. This is what surprised me. We decided to pull the filter off just for fun to see what would happen on the CAI. Here are the results:
No Filter: HP: 177.15 Torque: 185.59
That came as a surprise to me. I guess k&n filters aren't that great after all. The thing that put a smile on my face is that I made those numbers with just a y-pipe and intake on an engine with 212,000 miles. Another funny thing was people under estimated the max and thought i'd pull 150 at the most. But I proved them wrong.
09-13-2006, 04:57 PM
#11
Dynoing a intake isnt really possible. your car isnt moving, therefore not sucking up any air, a CAI is good cause it sucks up the cold air at the lowest possible point WHILE YOU ARE DRIVING! sitting still you wont notice much of a difference.
09-13-2006, 05:10 PM
#12
Originally Posted by TunerMaxima3000
Dynoing a intake isnt really possible. your car isnt moving, therefore not sucking up any air, a CAI is good cause it sucks up the cold air at the lowest possible point WHILE YOU ARE DRIVING! sitting still you wont notice much of a difference.
09-13-2006, 05:39 PM
#14
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What I really wanted to do was stock vs. CAI but like I said I left my stock intake home which is 1200 miles away so I was unable to do it. The HAI vs. CAI just gave me an excuse to get my car on the dyno at school. I know the gains would probably be small if there even are any but I just wanted to find out once and for all if there really are any gains by switching to an aftermarket intake or if the stock intake is better for performance as some people claim. I've just been reading all of these threads of people arguing over which intake is the best yet no one has any proven results to back it up. Once I go back home, i'm gonna get it on a dyno at a local shop and end this argument once and for all. It may be stupid since like everyone says the gains are minimal but it's just something that bugs me and I want to find out for myself.
09-13-2006, 05:51 PM
#15
Originally Posted by NYC32798
yet no one has any proven results to back it up.
It's really quite simple.
09-13-2006, 06:01 PM
#16
Originally Posted by NYC32798
No Filter: HP: 177.15 Torque: 185.59
That came as a surprise to me. I guess k&n filters aren't that great after all. The thing that put a smile on my face is that I made those numbers with just a y-pipe and intake on an engine with 212,000 miles. Another funny thing was people under estimated the max and thought i'd pull 150 at the most. But I proved them wrong.
09-13-2006, 06:03 PM
#17
Originally Posted by NmexMAX
MAF signal changes w/ an intake, so therefore.... engine is seeing more air, check the exhaust (a/f) and adjust accordingly... get more gains...
It's really quite simple.
It's really quite simple.
hopefully that A/F will clean up nicely.
09-13-2006, 06:52 PM
#18
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I'll have to try that monsterflow. I've read good things about it but the only down side to it is it needs cleaning more often. I was surprised to see that it gained nearly 5hp with the filter off. I forgot to add before that it was running pretty lean. At WOT, the A/F ratio was over 16:1. So the A/F needs to be adjusted.
09-13-2006, 07:25 PM
#19
Originally Posted by NYC32798
I'll have to try that monsterflow. I've read good things about it but the only down side to it is it needs cleaning more often. I was surprised to see that it gained nearly 5hp with the filter off. I forgot to add before that it was running pretty lean. At WOT, the A/F ratio was over 16:1. So the A/F needs to be adjusted.
09-13-2006, 07:41 PM
#20
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Originally Posted by NYC32798
I'll have to try that monsterflow. I've read good things about it but the only down side to it is it needs cleaning more often. I was surprised to see that it gained nearly 5hp with the filter off. I forgot to add before that it was running pretty lean. At WOT, the A/F ratio was over 16:1. So the A/F needs to be adjusted.
09-13-2006, 07:57 PM
#21
Originally Posted by NYC32798
At WOT, the A/F ratio was over 16:1. So the A/F needs to be adjusted
...That's much too lean, surprised your engine didn't melt.
Originally Posted by FantasyGod
You would make less power after the A/F ratio is tweaked to a richer mixture
..14.7:1 is stoich... but too lean for WOT all the time, 13.5 seems to be a favorite for dyno tuning around here.
Originally Posted by FantasyGod
I'm interested in seeing the powerband with respect to engine speed
09-13-2006, 09:09 PM
#22
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I'll try to post the dyno results next time I visit my relatives cause I don't have a scanner unfortunately. The A/F ratio chart shows 3 different lines. 1 is dotted at 13:1 so i'm guessing that's where it's supposed to be. There are 2 other solid lines and one is at about 15:1, but the other is at about 16:1 so I don't know which one to go by. Either way they both show that it's lean. I guess I need to get my ecu tuned.
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