Page: 1 2 3 ... 15 16 17 18 19 ... 50 51 52
|
|
Re: Air intake design & modifications
Hi Josh,
Thanks for your very valuable feedback and it always good to see an honest opinion and debate which will helps us achieve the best.
I will make the following comments about my impression of the CAI since the day I installed it and will then make further comments about your proposal. Please don't shoot me, as I am far from being an expert in this field and only go by what I am personally experiencing and what I know about enclosed pods 
OK, I have told Noel (this is also mentioned in one of my previous posts) that I felt the exy acting a bit strange or inconsistent to be more accurate, since I installed the CAI.
I have started troubleshooting this behavior and the first thing I have noticed was that the vacuum hose was far too long, so I cut that and made it fit perfectly and then re-set the ECU. This alone has improved fuel consumption and got it back to my normal levels of 10.7 to 11LT/100kms and I do drive the exy like I stole it.
OK, Now we come to the performance of the pod filter I have and the amount of air flow going through it. I think I do have another problem and that it the quality of this pod filter that has been supplied as part of the Cosmo kit. The base of the filter is a closed rubber type (to help prevent moisture or dust coming in I think) but at the same time it is restricting air-flow, as the splash guard is open from the bottom of the fender and does show HALF of the filter base.
I have ordered a K&N pod filter with an open base and I am hopeful that it will help me further and will indeed increase air-flow.
Another observation I made was the performance of the exy in hot and cold weather. Of course the exy feels more lively when it's cold and less when the weather is hot, but this is to be expected, as the pod filter is sucking in hot air from the outside (but no where as hot compared to the engine bay temperature)
Air-con on also affects performance, but I have never seen racing cars race with the air-con on LOL
This is my set-up and my problems (which may sound normal to users of the CAI set-up)
Now I come to your suggestion.
While your suggestion is feasible, I still can't get convinced that a short ram or even an enclosed pod set-up INSIDE the engine bay can give better results that a filter located outside of the car.
The short ram will reduce the distance needed for the air to travel to the throttle body indeed and will help with the suction, but at what expense? Engine bay temperature is not something I would want my engine to breath and if you do decide to enclose that pod filter inside a box that has a heat shield, then you will reduce air-flow.
Now if you decide to add an external pipe going through the standard (factory) air-box to increase air-flow, then that is of workable and it will be exactly the same set-up like an external snorkel. The down-side is the need to drill the factory air-box to fit that pipe and I always of the belief that a mod is good if it can reversed to the factory set-up. With this method, you have wrecked the factory box and will need to get a new one should the need arise to have the exy presented to the dealer for a warranty claim.
In any case, please don't let my comments discourage you and Noel from going a head with your project and I will be prepared to do a dyno comparison when you finish so we can see which set-up works best for the xtrail.
Noel has the same performance mods (except the CAI) like mine, so once you guys finish your project and do the dyno run, we will have real time results to compare.
Good luck to you both and let me know if you need any help.
Last edited by jalalski, 23/Nov/2006, 12:46 pm
|
|
23/Nov/2006, 12:42 pm
|
|
|
|
Re: Air intake design & modifications
quote:
MrSoul85 wrote:
and with your permission i would like to design a intake setup with using measurements from noel's X-trail and then post it up here for comments and thoughts...
I don't have the slightest problem with that at all. Please go a head.
|
|
23/Nov/2006, 1:19 pm
|
|
Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6109
|
 | 
|
|
Re: Air intake design & modifications
quote:
MrSoul85 wrote:
To counter act this i would recommend a Pod enclosure and Air ram duct. cause with a Duct from your front bar your actually forcing air through the filter and into the air intake manifold...
... but by having that air being forced it. it will respond better to throttle movement. hence better accelleration.
... i'm hoping to chuck his X-trail on the Dyno before and then chuck it on "Post" install and see if there is any improvement at all...
Josh,
Please if I am wrong correct me, but how will a dyno test of this setup show any improvement as the vehicle will not be moving in respect to the surrounding air so there will be no 'forced induction' caused by vehicle speed ?
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog |
|
24/Nov/2006, 1:24 am
|
|
NPC73
X-TRAIL HOLIC
Date Registered: 12-2004
Location: Mount Isa, QLD
TOTAL POSTS: 1247
|
|
|
|
|
Re: Air intake design & modifications
Some dyno places have fans that simulate air traveling to the vehicle at around 60km/hr
---
Noel...
Member ID: X-072 (Retired Administrator)
2003 X-trail, TI, Manual, (Series 1) - (with the works)
2013 Toyota Prado, Manual, Turbo Diesel - (Snorkel-K&N-Full Exhaust, 20" Low Profiles, Chrome Bullbar, HID Spots, + All the Bling!)
|
|
24/Nov/2006, 1:33 am
|
|
Page: 1 2 3 ... 15 16 17 18 19 ... 50 51 52
|
