Posted: Apr 09 2007 at 9:01pm | IP Logged

I recently Traded in my 2003 WRX for the David Hassel Hoff addition Bright yellow, Frontier( 2003 3.3 S/C). I Absolutly love, it. Not quite as quik as my subbie was but with alot more ground clearence.

1. I have removed all the original intake and resornators and replaced them with 3 inch straight pipe with the propper inlets for vacum tubbing, monitoring devices and such.
2.  Fabricated a ram air from underneith the front bumper through the wheel well, and into a
3.  custom fab airbox/ heat sheilded cone filter housing.
4.  I am running true 2.5 duals from catalytic converters with muffelrs removed from a viper that exit before the rear wheels.

That being said, I am contemplating carefully my next performance modification.

1. I am currently debating sever forms of engine managment systems from the chip, to jet performance chip. I am very interested in what exactly my options are when considering engine managment.
2.  Also Considernig the reduced diameter S/C pulleys. I am considering the 2.45 diameter option, is this worth it.
3. I read in an other post that there is a temp sensor that regulates, and other wise negates HP gain after the engine warms up. I have experienced this loss of HP after heat up what are my best options on correcting this.
4.  As well as any other tips or recomedations will be welcomed advice.

Posted: Apr 11 2007 at 11:42pm | IP Logged

Wow what is the perpose of a forum, if not to discuss things pertaining to what ever the forum is about! No offence But nothing at all. I mean it has been 2 days now and 20 people have looked at it and no one has had anything to offer. not even a referal of some sort of an other post or link to another site. Well that is OK then I will answer my own question. Since no one wants to.

EXHUAST

Size- When dealing with forced induction engines ( that is super/turbo charged) such as the S/C Frontier. I do not believe back presure of any kind is needed due to the fact that airs is already being forced through it. Back preasure is only benificail to NA engins as they are engines designed to work with back presure. So In other words Bigger is better for the S/C Frontier to a point so as not to be cumbersome.

Intakes.

There are more of these things than you can count. However when chosing which one consider these factors.

One diameter of the tubbing- The inlet on stock 03 is about 3 inches in diameter(so is the MAFS) so anything bigger than that really won't do much and will have to be funneled in to the intake wich if not done correctly could cause disruptions in the air. Which brings me to my next point.

Smoothness- The smoother and less curvitur that an intake has the less places airs has to bounce off of, or be other wise directed in any direction other than in, which will also push again more incoming air.

Filter size- Cone filter is a must being that surface areas is greater than a panel filter. Again bigger is better becuase most ofter the filter is the most restrictive part on an intake system. Also pourusness, that is how well the filter beaths, you do not want to thin or pourus as it will defeat the purpose of haveing filter in the first place. K and N is a very well trust and always over priced brand that has been around for a while. I suggest buy the matterials and finding some sheet metal for a heat sheild. It is about 150$ cheaper and really does not take that much time. Here is what you will need.

2hours

Remove all of the Factory intake, (If desired) I did. Every thing up to the intake of the S/C/ Also reach into the wheel well and remove the resonator in there as well. This is a great place for ram air or cold air intake to be ran.

1 3"diameter 22degree bend 6-8 inches long

2-3" couplers

1-MASF attachment so as to make it mateable with a Cone filter

1 Cone filter

3 gromets for the 2 holes that you will drill into the 22degree to feed the vacum tubes and one 1/8 inch gromet to feed the other vacum tube close to the MAFS. you will need to dril a hole for this to.

SUPER CHARGER UPGRADE ( not replacement)

There are various sizes of decressed diameter pulleys for out frontiers. These smaller pulleys serve to incease the speed at wich the belt turns the impeller inside the supercharger there for increaseing the boost. From what I understand anything above a 2.4 diameter pulley (2.65 is stock) should not turn the S/C faster that the 1400 RPM that it is designed to take And  anything smaller may cause Heat damage to your engine and supercharger. Also 2.3 2.35 2.4 2.5 and original 2.64 are available for sale.

Stock 2.64= 6-8PSI

2.3= 10-12PSI

2.35= 10-11PSI (25-28HP)

2.4= 9-11 PSI

2.5= 7-9PSI

Both Air intake and Exhaust will effect boost on this car. Not so mush response being that it is tied to the engine.  But makeing it easier for you engine to suck in air will allow your S/C to more easily do it job and robbing less power from your engine. This is because super chargers are driven by the engines power.

Engine Managment/Chip/ resistors.

Resistor- temporarraly "trick" your engine, so to add more fuel and air. potencailly dangerous due to the fact that it provides fales readings. Temporary because you ecu will adjust to compensate for the abnormal signal. This can prove damageing to you OBD sensors as well as your engine as a hole.

G-Box/G-Box gold/ Triphase

These are relativly simple chips that serve to adjust fuel curves while still maintaining MPG relativly well. They Claim that "90% of there cars experience + or - 1 MPG after install. ( These are tipical numbers from vehicle to vehilce and state to state MPG numbers)  They Are safe on applications on S/C vehicles, However if you order one you must specify that you do as is noraml for almost all mods.

ECU remaps and computer flashes.

These are not the best bang for the buck but sill the best bang. This is basically retuning your computer to be more accuate and efficent in fuel curves, Air fuel ratio, shift times ( for auto) and some others depending on application. An ECU reflash should be the last of the mods as you can have your computer tunned to your specific mod set. ECU also serve to maxize gain on all your other mods, as well as won't void warrenty.  

Posted: Apr 12 2007 at 2:37pm | IP Logged

..

FrontierSC;

Welcome to the group!

hummmmmmmmmm... who is David Hassel Hoff? Is he a member and drive a Frontier... and WTF is a WRX... 

If something I’ve posted on the Internet offends you please ignore it. If you don’t know how to ignore something on the Internet e-mail me … and I’ll demonstrate.

Posted: Apr 13 2007 at 3:08am | IP Logged

Wecome to the group FrontierSC, there is also a forum section that is for introducing yourself to the group specifically, I mean what good is it having a section like that if nobody posts there!!!!????!!! lol sorry..couldn't resist, um...unless you are just making  reference to the yellow color...didn't they drive Ford Rangers on Baywatch? I could have sworm they were Ranger "Edge" versions or something like that. Also, sounds interesting the stuff you are planning on doing to your truck, tho, I'd look at a AEM Brute Force intake and then adding any other piping and what not to draw more cool air in if that's what you are aiming for. The valance on the bumper would actually be a great place it you were so inclined to run fab'd piping or tubing to funnel "cooler" air to the filter element. As far as K&N, I had a  stock replacement from them and yanked it, and after reading a study done on diff air filters (albeit, they were stock replacements) it found that it let the most crap through, which would make sense since it also flowed the best, tho the flow rate difference between any of the stock replacement filters was very minimal. By the way I believe that study is linked in sticky from a post  I made in adding horsepower in this section.  Cone filters might yield different results, however AEM seems to be on tosomething IMHO with their dryflow filter that filters down to one micron and has an extremely high initial and cumulative filtration testing claim, done by an independent lab with the results linked on their website in PDF format. check it out if you like.  If you can post some pics of your rig and your mods, I am sure others would definitely be interested as well as a sound clip, i'd love to hear how those mufflers and your true duals sound on your fronty.

Posted: Apr 13 2007 at 11:08am | IP Logged

I FEEL YOU ON THE SUBIE! i just sold my 05 sti with 373 to the wheels and got an is300. (mistake)

i miss my subie.

anyway on to your truck.

the setup you have is a start but i tell you ive spent close to 2500 on my 3.3 and i can hardly notice a difference.

we have our own shop (see my pics) so i can speak from experience.

i pulled my motor when the truck was brand spankin new to evaluate my options.

sadly, i put her back in with minimal mods.

i even tried HARD for months to get a turbo set up to work,but for the money 150 horses TOPS just isnt worth it.

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long story short

anything you do will only be minimal gains.

but good luck in your researching! i have found out a ton of info just by experimenting with different parts, that alone is satisfaction enough.

Posted: May 14 2007 at 10:43pm | IP Logged

To answer your question Yes and no. There is nothing wrong with the truck, mechanically, but if you drive the truck after about 5 to 10 minutes after warm up you are driving a totally different vehicle than at first. My S/C frontier though not stock, is a light weight monster when it is cool and a heavy weight pig when it is hot. I think it is just poorly designed. However there are remedies there is always remedies. My personal fix for this heat sink problem, was to fabricate a functional hood scoop two cold air inductions from the front bumper (actually three counting the one that feeds the air filter, and two the serve to cool the little over worked S/C. Also I purchased a 6 PSI fuel pump, with some fuel lines and a transmission cooler and ran the fuel lines in-between the ribs and around the base of the S/C. into the trans cooler, to a reservoir and through the pump again. I mounted the Cooler in the front bumper. I have deemed it an outer cooler. Since there is no intercooler for the S/C. frontiers. These three cooling mods have made a world of difference and will probably serve to prolong the life of the engine as well. I Love my S/C frontier it just needed to a little tweaking.