Why don't you and your "white chocolate" go to another thread. Lol. J/K. In my opinion and experience with a Subaru STI, I wouldn't do an intake alone.
big difference.. the reason for the STI intake, is that its a turbo car and messes up the air fuel ratio.
Its been discussed here to no end. The intake will show performance gains for a while, as more air will lean out the mixture
After the ecu learns its there, it will richen it up a bit.
So many companies steak claims saying that youll gain xx horsepower doing this compared to xx from this other company, really you cant go too wrong. If i did it over again, id go with a bwoody because its a true cold air intake, unlike the short rams
Air intake was my first mod on the jeep too. Thats where it all started
expect an hour or two if you have never done it. But its a learning experience and pretty much any intake will come with instructions
My gas mileage went up and my friend in the city owns a dyno at his performance shop. Every year we get to have 2 free dynos. I was able to gain 7.3 hp from stock, to intake.
Benefits WILL increase with more stuff, tuner, tune, exhaust, etc etc, but you WILL see a gain from an intake alone.
I have the Fastman TB on my WK 4.7 and I'm waiting to see if Bwoody come out with a CAI before I make a decision on what to buy. I didn't need to give it any thought because I was running a fastman TB and CAI on my previous lifted Jeep Cherokee. The '08 4.7 is already pretty responsive but the TB made it more so and more usable in the hills. I am not yet running a lift or larger tires but my experience with the XJ showed the advantage - the lifted XJ had struggled on my hilly commute to stay in 4th gear and would never get into 5th. After the TB/CAI I was able to get back 5th and stay in 5th for the commute. I had tried the CAI on it's own and saw a small improvement but it was only after adding the TB with the CAI that I saw the noticeable difference. This was general driving not WOT but it did help there too.
If you are thinking about this just to say the newer WK TB's plastic is fragile. Don't overtighten the clamp when installing especially if you have a modified TB that has less material.
I'm being honest, but explain what a Fastman TB does. I truly don't know. Also how much gains do you get out of it? Is it worth it? I assume it voids engine warranty etc etc.
I have it installed on my wk 08 4.7 and the result was less hesitation/better throttle response and less downshifting (or use of tow/haul) on the hills. No change in mileage better or worse (maybe a 0.2mpg improvement).
I haven't spent the cash to get it dyno'd but it's clear that eliminating or reducing downshifting on climbs after installation of the TB has made a big difference - and that continues after 8K miles. I will add a CAI to it but will hang on for Bwoody a while longer, I expect the CAI to be less restrictive and allow the larger TB to perform even better. I can't see how this would cause any warranty problems except on the TB itself. It's the same physical TB model but has been bored to a larger diameter (74mm), tapered further at the edge (77mm) and any restrictions removed/reduced. It's a 10min easy job to install.
I haven't spent the cash to get it dyno'd but it's clear that eliminating or reducing downshifting on climbs after installation of the TB has made a big difference - and that continues after 8K miles. I will add a CAI to it but will hang on for Bwoody a while longer, I expect the CAI to be less restrictive and allow the larger TB to perform even better.
thanks everyone for responding,whats a good brand im thinking aem,but in massachusettes they are illegal so it makes it difficult to get a sticker,and what does a power wire do?
Oh ya you have visual inspections. I forgot that visual inspections make it hard to pass with things like that. I think AZ, where I live, just does gas cap and CEL.