So if I'm understanding you guys right, your suggestions are to get the Stillen headers, 2J racing lightweight pulley, and the K&N intake? That totals to about $750 and gives me approximately 20whp?
According to the dyno charts, tested vehicles gained approximately 100 hp. I'm not sure if that's at all accurate but if so, can an Altima 2.5 handle that much hp gains? (engine, CVT-wise)
there is no tuner that will add 100hp to the 2.5 its just not there in the engine as is. what you can look at is around a 10% increase in hp. depending on the tune u choose( there is no self tuning) and what other bolt ons you have. car stock will give u the least increase. car with several bolt ons will give u more of an increase.
i highly recommend these four things for increase in performance. intake, tune, pulley and exhaust in that order. you should be able to do all 4 for way less than $1000 if you price everything right and dont waste $$ on names like Stillen and Nismo
now if you are making your car faster u need to stop and handle better too. so put $$$ aside for that too
So if I'm understanding you guys right, your suggestions are to get the Stillen headers, 2J racing lightweight pulley, and the K&N intake? That totals to about $750 and gives me approximately 20whp?
I'd say it would be closer to 30 whp. But more important is those should be gains all throughte power band. Low end thru high. You start there and you will feel it.
there is no tuner that will add 100hp to the 2.5 its just not there in the engine as is. what you can look at is around a 10% increase in hp. depending on the tune u choose( there is no self tuning) and what other bolt ons you have. car stock will give u the least increase. car with several bolt ons will give u more of an increase.
i highly recommend these four things for increase in performance. intake, tune, pulley and exhaust in that order. you should be able to do all 4 for way less than $1000 if you price everything right and dont waste $$ on names like Stillen and Nismo
now if you are making your car faster u need to stop and handle better too. so put $$$ aside for that too
But the intake and pulley added together will be around $300-400 already. The tune is at least $400? That leaves $200 for an exhaust. I can barely find any exhaust that will fit a 2.5, if you know any that doesn't sound ricey nor raspy, it would be appreciated.
the pulley is less than $100 (2J racing.com)
intakes can vary from $100 up to 300+. shop aroundthey are all SRI warm air intakes only differences are mainly the heat shield if it does have one. what u choose is up to you
the bully dog can be had for around $300 new. check ebay or amazon. i got mine for $280 new
that leaves you $300 to 500 left for exhaust work like headers or muffler replacements.
How hard could piecing things together be? Given the right tools, time, and reading the manual?
I just figure spending $1,000 gaining 30hp tops vs waiting a couple paychecks and spending $1500 gaining 150-200hp...
Sure. Just trying to be objective about things like this. Can you be without your car while trying to install. Manual? Dont think there is one for a turbo kit. Probably just basic that come with the kit but part of it is going to be custom. On the one you still need to add injectors,fuel pump and tune. A manual isnt going to tell you what to do with the universal piping in case it doesnt fit. Just from the few searches I did on this site. It isnt a cut a dry install. I would stay with the basic things people have suggested until ready to spend some money on a good kit and everything needed.
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the pulley is less than $100 (2J racing.com)
intakes can vary from $100 up to 300+. shop aroundthey are all SRI warm air intakes only differences are mainly the heat shield if it does have one. what u choose is up to you
the bully dog can be had for around $300 new. check ebay or amazon. i got mine for $280 new
that leaves you $300 to 500 left for exhaust work like headers or muffler replacements.
As for the headers and mufflers, can you give me suggestions if Stillen is not what I should be looking at? I want a muffler that sounds good and is decent. Headers can be anything as long as they're giving me better airflow.
that looks like a good price. the instructions with the BD are extensive and pretty clear. if u want tips on settings ill help u with that.
i never got headers or exhaust myself. never got around to it. what i gathered from everyone in here, who did exhaust upgrades, it was mainly for sound and no performance gain. headers would give you a boost in performance for sure. but you gotta deal with CEL cause it removes a cat converter, and it adds alot of heat to the engine bay(wrapping helps alot in that area).
there are youtube clips of altimas with different exhaust choices. see if u like any of those. two things not to do are: removal of resonator and/or run straight pipe(no mufflers)
that looks like a good price. the instructions with the BD are extensive and pretty clear. if u want tips on settings ill help u with that.
i never got headers or exhaust myself. never got around to it. what i gathered from everyone in here, who did exhaust upgrades, it was mainly for sound and no performance gain. headers would give you a boost in performance for sure. but you gotta deal with CEL cause it removes a cat converter, and it adds alot of heat to the engine bay(wrapping helps alot in that area).
there are youtube clips of altimas with different exhaust choices. see if u like any of those. two things not to do are: removal of resonator and/or run straight pipe(no mufflers)
Truth. I have headers solely to avoid the disintegrating pre-cat, but the P0420 code is kicking my ass and mechanics keep giving me crap about it. So I might end up getting an aftermarket one.
It sounds a little nicer, and the response at the higher RPMs is slightly better, but that's about it. Catbacks give a nice sound and a slight (slight) boost, and intake mods seem negligible, none of it being worth the money IMO.
A true boost would be a turbo or a super, IMO. Add bigger cams + all the aforementioned stuff and then it'll scream, but it would mostly be the turbo giving you the HP.
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headers would give you a boost in performance for sure. but you gotta deal with CEL cause it removes a cat converter, and it adds alot of heat to the engine bay(wrapping helps alot in that area). 
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