k&N or HKS Racing Suction
#5
Scooby Senior
If we're talking performance then you wouldn't be able to tell the difference.
They may sound slightly different.
The price will certainly be very different.
For your engines sake i would choose the K&N as i did.
Just as a side note, it is well debated as to wether an induction air filter is a performance enhancing mod or not, on an Impreza.
When i put mine on the initial throttle response did feel sharper, but as i've not sampled a performance panel filter, i'm not qualified to say that an induction filter is better. I would guess that the difference is negligible.
They may sound slightly different.
The price will certainly be very different.
For your engines sake i would choose the K&N as i did.
Just as a side note, it is well debated as to wether an induction air filter is a performance enhancing mod or not, on an Impreza.
When i put mine on the initial throttle response did feel sharper, but as i've not sampled a performance panel filter, i'm not qualified to say that an induction filter is better. I would guess that the difference is negligible.
#6
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
HKS leads to serious MAF misreads that threaten the safety of your engine from what I saw. Absolute nightmare to map around just like the APS induction kit - in fact the same calibration sorted it pretty close. Search on APS induction and you'll see the issues well documented. Aside from that I know someone who blew three MAF sensors with HKS induction, then none when he didn't use it any more. It could be fitting, but he fitted it properly. Vibration?
Trending Topics
#8
Scooby Regular
Join Date: Aug 1999
Location: North London, Xbox Live Gamer Tag: Jake Shiney
Posts: 1,621
Likes: 0
Received 0 Likes
on
0 Posts
I have run a HKS Suction kit on my MY00 for two years and had no problems whatsoever. And it was definately performance enhancing.
#9
Twatful
Join Date: Apr 2003
Location: Grew up and don't drive Scoobs anymore!
Posts: 9,050
Likes: 0
Received 0 Likes
on
0 Posts
How about a Blitz SUS Filter? Look and sound great, had one fitted for about a year with no probs,did blow a MAF sensor but I don't blame the filter
#10
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
The odd person here or there reporting a failure or no failure is not statistically significant.
The only one I would fit is a 57i or an APS if you remap. On the standard turbo I think not bothering at all has much merit. If they go significantly quicker at this level because of an induction kit it is IMHO (and Prodrive have supported this view as well) mainly because of MAF misreads leading to advanced ignition and leaner fuelling, but if this happens you'll lose bottom end torque and risk detonation, and it is not a very good way to get more out of a car by kludging the readings to one of its most important sensors.
[Edited by john banks - 4/24/2003 6:37:47 PM]
The only one I would fit is a 57i or an APS if you remap. On the standard turbo I think not bothering at all has much merit. If they go significantly quicker at this level because of an induction kit it is IMHO (and Prodrive have supported this view as well) mainly because of MAF misreads leading to advanced ignition and leaner fuelling, but if this happens you'll lose bottom end torque and risk detonation, and it is not a very good way to get more out of a car by kludging the readings to one of its most important sensors.
[Edited by john banks - 4/24/2003 6:37:47 PM]
#13
Ecu Specialist
Have to take issue with John on the HKS effect on maf, if the supplied spoiler gasket is correctly installed there is no problem, having fitted APS CAK, HKS and 57i back to back on my own car I have some pretty good data. You must install the spoiler gasket though.
The one filter I would not recommend to anyone even with a remap is the APS CAK, its restrictive as well as screwing the maf out put, yes you can get it remapped, big price to pay just to use a filter and means you can never use anything else without paying for another remap.
My view is the 57i kit is the best all round for filtration and performance but even that has some maf influence. And it can be used with an APS FMIC as well. HKS suction is best used with a density-rpm ecu which was how Christian used his.
bob
The one filter I would not recommend to anyone even with a remap is the APS CAK, its restrictive as well as screwing the maf out put, yes you can get it remapped, big price to pay just to use a filter and means you can never use anything else without paying for another remap.
My view is the 57i kit is the best all round for filtration and performance but even that has some maf influence. And it can be used with an APS FMIC as well. HKS suction is best used with a density-rpm ecu which was how Christian used his.
bob
#14
Scooby Regular
Am I correct in thinking that both Bob & John only recommend changing the Air Filter to something like the K & N if you are having a remap
Or is adding one without a remap ok
Sorry if I got confused with the answers (not that techie with cars)
Steve
Or is adding one without a remap ok
Sorry if I got confused with the answers (not that techie with cars)
Steve
#15
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
Bob didn't realise about the gasket as I hadn't fitted the kit myself or seen the instructions. I've refused since to map anything with this induction kit as I was so horrified and the problem didn't seem documented like the APS, maybe that was unfair if it was fitted incorrectly. Makes sense really since there is no great big bend before the MAF on the HKS so no reason for the readings to be that off. Can you describe what the missing part looks like?
Re APS: Do you think it is the filter or the bend that is restrictive (I ran without a filter for a test (not recommended to others BTW ) and the result was the same to within 1 BHP at 20G 1.6 bar power levels) but it still had the bend on.
Re APS: Do you think it is the filter or the bend that is restrictive (I ran without a filter for a test (not recommended to others BTW ) and the result was the same to within 1 BHP at 20G 1.6 bar power levels) but it still had the bend on.
#17
had a K+N on for about 3 months, just borrowed an BLITZ SUS POWER , been out this eve no diff in noise ,but the BLITZ pulls alot stronger much lower down the rev range, quite impressed, prob not as good at filtering the air but the car ran fine ,even smoother, thats on a version 1 sti ,hope that helps.m.
#18
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
Steve it seems the mapping issue is spurious, but you do hear of a lot of MAF failures. I think if you keep the original ECU because it still uses the MAF sensor you are better with a K&N as it appears to have a lower failure rate.
#22
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
Christian how is it fine when people serially blow MAFs with them? Maybe they don't misread like I thought if they are installed properly, but some people still seem to eat MAFs with them. Sounds to me like you should use them with a Link or other speed density setup as Bob is saying rather than on the most fragile MAF sensor Subaru seem to have used?
#24
Ecu Specialist
HKS supply an aluminium gasket, it is designed to be installed between the filter and the maf, it has "ears" so that it "spoils" the air flow causing it to become more "mixed" is evens up the air flow distribution. Using that I have not found a problem, the APS problem is down to the cast pipe imho, the filter is just a K & N cone when all said etc and not a very big one at that.
A "good" induction kit when used properly (read with remap) will always be better than the same car remapped with a conventional panel, using an induction kit on a car that is not remapped may or may not be ok depending on the car and other mods, since most later cars are mapped to run very rich in the boost areas its normally ok there but cruise can suffer as the maps are set lean for economy.
Its an old debate, I would stick to the filters that are known to be the most reliable, its worth mentioning that the maf is considered consumeable and can fail with or without induction kits to assist. Diferent experiences will seem to show patterns but, its a variable feast.
The APS is definately a problem in maf terms, the Blitz definately doesn't filter, I found a thick gunge just about to destroy my turbo when I used one for 6 months on my STi2 Wagon.
Bob
A "good" induction kit when used properly (read with remap) will always be better than the same car remapped with a conventional panel, using an induction kit on a car that is not remapped may or may not be ok depending on the car and other mods, since most later cars are mapped to run very rich in the boost areas its normally ok there but cruise can suffer as the maps are set lean for economy.
Its an old debate, I would stick to the filters that are known to be the most reliable, its worth mentioning that the maf is considered consumeable and can fail with or without induction kits to assist. Diferent experiences will seem to show patterns but, its a variable feast.
The APS is definately a problem in maf terms, the Blitz definately doesn't filter, I found a thick gunge just about to destroy my turbo when I used one for 6 months on my STi2 Wagon.
Bob
#25
Scooby Regular
Join Date: Feb 2002
Location: Lurkin Somewhere
Posts: 7,951
Likes: 0
Received 0 Likes
on
0 Posts
Not much of a technical answer, but buying k&n is for 1.3 Nova Sr's.
No offense, if i owned a jap car i wouldnt touch it.
blitz,hks,Junauto i would, i wouldnt even use Magnex on a jap super car.
Doesnt make the cut imho
Si
[Edited by super_si - 4/26/2003 9:33:11 PM]
No offense, if i owned a jap car i wouldnt touch it.
blitz,hks,Junauto i would, i wouldnt even use Magnex on a jap super car.
Doesnt make the cut imho
Si
[Edited by super_si - 4/26/2003 9:33:11 PM]
#26
I don't know I've used a K&N on my car since the FMIC went on that was about 30,000km ago. Only thing to have problems was the MAF (AFM to us in Australia) and that was only after a service where the mechanic inadvertantly over oiled it.
(since put a Link on so I don't have to worry about the MAF ever again)
Cheers
Brett
MY00 (Aust Spec)
(since put a Link on so I don't have to worry about the MAF ever again)
Cheers
Brett
MY00 (Aust Spec)
#27
Scooby Regular
Join Date: Apr 2003
Location: Copenhagen
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
When we talk HKS kits, is it then the HKS Powerflow kit or is it the HKS Racing Suction kit? As far as I know, it's only the RS kit that comes with the aluminium gasket, and there is quite a difference in price on the two kits.
Thread
Thread Starter
Forum
Replies
Last Post
crazyspeedfreakz
Wanted
17
05 October 2015 07:19 PM
Pro-Line Motorsport
Car Parts For Sale
2
29 September 2015 07:36 PM