Throttle response with aftermarket HPS/JOEZ intake tubes...
#1
Throttle response with aftermarket HPS/JOEZ intake tubes...
I had a chance to try both the HPS silicone and JoeZ intake tubes, both used in combination with the stock panel and AFE oiled filter.
Under WOT, the car feels similar to the stock intake, well actually pretty much identical in sound and seat of the pants acceleration.
But....under partial throttle, between 1500-3600 before the dual stage intake opens up, it felt like I lost power. Like the car seems to lug, throttle response seems to lag.
I tried resetting the ECU, switching between stock panel and AFE filters with no difference. Actually the combo that felt the laggiest was the HPS+AFE combo.
Once I put the stock intake pipe in, throttle response immediately became sharp again between those RPM ranges.
I've PM'd Caymandiver about my results and he has concluded that all these intakes for our cars have questionable results so I'm pretty much convinced the stock intake is absolutely the best. He also holds the quickest N/A IS-F record and all done with the stock intake so that's good enough proof for me.
Question is, any of you experience anything similar? I'm talking part throttle driving, does it feel like you lost throttle response/power in the lower RPM ranges?
Under WOT, the car feels similar to the stock intake, well actually pretty much identical in sound and seat of the pants acceleration.
But....under partial throttle, between 1500-3600 before the dual stage intake opens up, it felt like I lost power. Like the car seems to lug, throttle response seems to lag.
I tried resetting the ECU, switching between stock panel and AFE filters with no difference. Actually the combo that felt the laggiest was the HPS+AFE combo.
Once I put the stock intake pipe in, throttle response immediately became sharp again between those RPM ranges.
I've PM'd Caymandiver about my results and he has concluded that all these intakes for our cars have questionable results so I'm pretty much convinced the stock intake is absolutely the best. He also holds the quickest N/A IS-F record and all done with the stock intake so that's good enough proof for me.
Question is, any of you experience anything similar? I'm talking part throttle driving, does it feel like you lost throttle response/power in the lower RPM ranges?
Last edited by RSXiMUS; 10-26-14 at 01:21 PM.
#3
Lead Lap
iTrader: (26)
I have the carson tuned tube... pretty much the same as the HPS with a AFE dry air filter, I haven't notice a difference either but I might just be used to driving on it....I going to pull off my carson tube and try the stock tube and see if there was a noticeable difference.
#4
Instead of going by your 'butt dyno' why not try logging? (Torque/Techstream/etc)
Shouldnt be tough to record the MAF readings for both... that should tell you if its a placebo.
Shouldnt be tough to record the MAF readings for both... that should tell you if its a placebo.
#5
Lexus Champion
Join Date: Jun 2007
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The area where your looking for throttle response really isnt where the motor is setup to make power and be responsive. Reset the ECM and drive spiritedly during the calibration process and you should see a noticeable improvement.
#6
I have the HPS intake , youre not going to be able to tell a difference from 5 hp.. get headers and exhaust.
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Orange County, CA
Email: info@merakiautoworks.com
Text/Call: 213 394 2886
Website: www.MerakiAutoworks.com
#9
Now I'm not talking about WOT pulls, since it felt the same but ONLY under partial throttle application the car's character felt less willing, less playful per se.
I was tempted to take it back to the dyno but I'm not sure if dyno's can accurately measure partial throttle...
#11
Driver School Candidate
I had a chance to try both the HPS silicone and JoeZ intake tubes, both used in combination with the stock panel and AFE oiled filter.
Under WOT, the car feels similar to the stock intake, well actually pretty much identical in sound and seat of the pants acceleration.
But....under partial throttle, between 1500-3600 before the dual stage intake opens up, it felt like I lost power. Like the car seems to lug, throttle response seems to lag.
I tried resetting the ECU, switching between stock panel and AFE filters with no difference. Actually the combo that felt the laggiest was the HPS+AFE combo.
Once I put the stock intake pipe in, throttle response immediately became sharp again between those RPM ranges.
I've PM'd Caymandiver about my results and he has concluded that all these intakes for our cars have questionable results so I'm pretty much convinced the stock intake is absolutely the best. He also holds the quickest N/A IS-F record and all done with the stock intake so that's good enough proof for me.
Question is, any of you experience anything similar? I'm talking part throttle driving, does it feel like you lost throttle response/power in the lower RPM ranges?
Under WOT, the car feels similar to the stock intake, well actually pretty much identical in sound and seat of the pants acceleration.
But....under partial throttle, between 1500-3600 before the dual stage intake opens up, it felt like I lost power. Like the car seems to lug, throttle response seems to lag.
I tried resetting the ECU, switching between stock panel and AFE filters with no difference. Actually the combo that felt the laggiest was the HPS+AFE combo.
Once I put the stock intake pipe in, throttle response immediately became sharp again between those RPM ranges.
I've PM'd Caymandiver about my results and he has concluded that all these intakes for our cars have questionable results so I'm pretty much convinced the stock intake is absolutely the best. He also holds the quickest N/A IS-F record and all done with the stock intake so that's good enough proof for me.
Question is, any of you experience anything similar? I'm talking part throttle driving, does it feel like you lost throttle response/power in the lower RPM ranges?
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Hassled1 (08-18-19)
#12
Instructor
#13
Moderator
This may be true, though. I don’t think my car runs any harder with the larger RR intake. I don’t have any data to back it up. I did a lot of stuff at once, so it’s hard to delineate. My major track reduction most likely came from drag radials and E85, which helped the tune a lot. Then again, your not really gonna feel a 10 hp bump on a 480-500 hp car.
#14
Pole Position
iTrader: (2)
This may be true, though. I don’t think my car runs any harder with the larger RR intake. I don’t have any data to back it up. I did a lot of stuff at once, so it’s hard to delineate. My major track reduction most likely came from drag radials and E85, which helped the tune a lot. Then again, your not really gonna feel a 10 hp bump on a 480-500 hp car.
#15
This may be true, though. I don’t think my car runs any harder with the larger RR intake. I don’t have any data to back it up. I did a lot of stuff at once, so it’s hard to delineate. My major track reduction most likely came from drag radials and E85, which helped the tune a lot. Then again, your not really gonna feel a 10 hp bump on a 480-500 hp car.
I have no Dyno numbers to prove it, but I'm 99.9999% sure I got more than 10whp from the tunes intake and tune, lol.
V.