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-   -   325i boost (http://forum.e46fanatics.com/showthread.php?t=606846)

Deadshot 09-09-2008 10:24 AM

325i boost
 
hey guys so i have a 04' 325i auto, yeah i know i should of got a manual but the deal on this car was too good to pass by so i bought it and a M3 is way out of my budget. So i was wondering are there any mods i can do to improve hp and torque on it? i mean i know i wont get much improvement because its auto but i still want to be a little bit faster. Doesnt anyone know what the max i can peak out on performance and torque on an auto 325i? thanks! :thumbsup:

Chris-TK 09-12-2008 12:47 AM

There are only small mods that you can do to improve hp without forced induction.

Exhaust and cold air intake will yield minimal results. Headers will get your a bit more around 15hp. The best and cheapest way to get hp/torque is forced induction, don't even waste your time with the other small performance mods if you really want it to be faster.

fndrh1st 09-15-2008 01:44 AM

do things like headers, cold air intake, and exhaust even yield ANY noticeable differences when driving?

Chris-TK 09-15-2008 02:00 AM

Quote:

Originally Posted by fndrh1st (Post 8533064)
do things like headers, cold air intake, and exhaust even yield ANY noticeable differences when driving?

Yes they're noticeable in the low and high ends. But if you want REAL power you have to go forced induction.

Sev21 10-02-2008 08:03 PM

well how about modding a 98 3 manual with an 01-04 auto 3? simsima told deadshot that it would be better to have a manual 325/30 for any mods to be realize (felt). is this true and if so, how come the manual would yeild better performance from the upgrades?

Asbjorn@ESS 10-04-2008 02:33 PM

Headers make minimal difference below 300rwhp on the M54, stock airbox on the 325 is very good.

pbfanatic321 10-04-2008 07:47 PM

Quote:

Originally Posted by christkharris (Post 8520804)
There are only small mods that you can do to improve hp without forced induction.

Exhaust and cold air intake will yield minimal results. Headers will get your a bit more around 15hp. The best and cheapest way to get hp/torque is forced induction, don't even waste your time with the other small performance mods if you really want it to be faster.

Sorry for this really bad question but whats forced induction?

Chris-TK 10-04-2008 08:04 PM

Quote:

Originally Posted by pbfanatic321 (Post 8633937)
Sorry for this really bad question but whats forced induction?

Forced induction = supercharger or turbocharger
NA = naturally aspirated, not forced induction


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