What is needed to make the E90 325i as fast as a 330i

335imax · 11-15-2010, 09:09 AM

I am assuming with a BMW performance exhaust and resonator delete, and a proper ECU Software flash, I can make my E90 325i as fast, if not faster than a stock 330i from the same year. Am I thinking correctly?

Stock numbers?
330i 0-60 6.2
325i 0-60 6.8

kamek · 11-15-2010, 10:16 AM

No, you're not thinking correctly. Your listed mods will put a little more pep in your step, but it won't put you up there with a 330.

BMW Performance exhausts don't have a resonator, and just putting a tune into the 325's N/A engine will definitely not put you up there with a 330.

The only way to keep up with a 330 is to do a 330 intake manifold swap and pair that with a proper tune.

335imax · 11-15-2010, 10:41 AM

Just feels like if I only need to gain half a second, then Im already there. Maybe the 330i weights more? Im not talking HP, just 0-60

e90pilot · 11-15-2010, 02:50 PM

A half a second faster to 60 actually requires quite a bit of power. I think road and track got the 330 to 60 in 5.5 sec but they use a 5 ft rollout. The numbers you see are more what you'd be able to produce. I did the manifold swap but I'm still 5-10 whp short of a 330. I just put a Dinan exhaust on so I might go back to the dyno soon.

pittyinSC · 11-15-2010, 06:58 PM

What kamek said. You need a 330i intake manifold and a tune for that. An exhaust and intake would just
add to that.

benzo23 · 11-15-2010, 08:02 PM

i swear to god its like every 3 days there is some sort of thread about this...cant you people search? I mean its all the same answers

11-15-2010, 09:09 AM	#1
335imax Second Lieutenant 44 Rep 210 Posts Drives: 2012 335i Join Date: Sep 2010 Location: Virginia iTrader: (1)	What is needed to make the E90 325i as fast as a 330i I am assuming with a BMW performance exhaust and resonator delete, and a proper ECU Software flash, I can make my E90 325i as fast, if not faster than a stock 330i from the same year. Am I thinking correctly? Stock numbers? 330i 0-60 6.2 325i 0-60 6.8 __________________ M Performance Suspension Last edited by 335imax; 11-15-2010 at 09:31 AM..
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11-15-2010, 10:16 AM	#2
kamek Brigadier General 358 Rep 3,447 Posts Drives: 2018 X3 M40i Join Date: Mar 2008 Location: Queens, NY iTrader: (4) Garage List 2008 BMW 328xi [8.20]	No, you're not thinking correctly. Your listed mods will put a little more pep in your step, but it won't put you up there with a 330. BMW Performance exhausts don't have a resonator, and just putting a tune into the 325's N/A engine will definitely not put you up there with a 330. The only way to keep up with a 330 is to do a 330 intake manifold swap and pair that with a proper tune. Last edited by kamek; 11-15-2010 at 10:22 AM..
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11-15-2010, 10:41 AM	#3
335imax Second Lieutenant 44 Rep 210 Posts Drives: 2012 335i Join Date: Sep 2010 Location: Virginia iTrader: (1)	It just feels like I am already at least .5 seconds faster Just feels like if I only need to gain half a second, then Im already there. Maybe the 330i weights more? Im not talking HP, just 0-60 __________________ M Performance Suspension
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11-15-2010, 02:50 PM	#4
e90pilot Freight Dawg 104 Rep 2,103 Posts Drives: E90 325i Join Date: Jul 2005 Location: Oakland, CA iTrader: (3)	A half a second faster to 60 actually requires quite a bit of power. I think road and track got the 330 to 60 in 5.5 sec but they use a 5 ft rollout. The numbers you see are more what you'd be able to produce. I did the manifold swap but I'm still 5-10 whp short of a 330. I just put a Dinan exhaust on so I might go back to the dyno soon. __________________ --Marcelo '06 Arctic Metallic 325i \| Sport Package \| 6MT \| Dinan Stage III suspension \| Dinan exhaust \| 330i manifold swap! Click here! \| Active Autowerke tune \| 135i Brake Calipers \| Deiselboost caliper brackets \| E46 M3 front rotors
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11-15-2010, 06:58 PM	#5
pittyinSC Drives Smart 54 Rep 2,393 Posts Drives: 1968 Austin Mini Cooper 1380cc Join Date: Jan 2007 Location: Nashville, TN iTrader: (2) Garage List 2006 330i [0.00]	What kamek said. You need a 330i intake manifold and a tune for that. An exhaust and intake would just add to that. __________________ 08 BMW ///M5 Space Gray/Black 6 speed Engine: RPi GTS exhaust, RPi Scoops, Carbon Filter Delete Exterior: Glossy Black Kidneys, LUX V3, OEM LED License Plate light, Bruce License Plate Adapter
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11-15-2010, 08:02 PM	#6
benzo23 Colonel 74 Rep 2,848 Posts Drives: 14 F30 AW MSport Join Date: Apr 2010 Location: FL iTrader: (1)	i swear to god its like every 3 days there is some sort of thread about this...cant you people search? I mean its all the same answers
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