godfather2

on a hidden back road in brandon i raced my cousin's 2004 bmw 325 from a dig. it wasn't even a sweat - by 70mph i was up by about 2 car lengths and simply shut it down. btw, both cars are automatic sedans with only driver in them. anyone know the horsepower/torque figures for that particular bimmer?

gamblez

i think it has 184 hp and torque im not sure but it has more then us and it comes lower our cars are killer from a roll

HoOnzABPTSX

I learned how to drive manual on the 2003 325Ci. The car might not be fast but it handles very nicely and corners like a dream. With that said, in a straight line, its not even remotely quick

stewie20068

I was looking at a 325ci when I considered my TSX in 04. I remember they had nearly identical 0-60 numbers so I guess the I/H/E plus TB bypass and comptech gasket and pulleys buys you two car lengths over a BMW 325i. Do you think you added around 45hp to your TSX?

chuson

Obviously not 45hp on the wheel, not even in the crank I guess. Don't just add up individual mods "gain" # cause everyone hopes it does but it's not. E.g. Pulley itself might yield you 7-9whp if you have NO other mod. Let say if you have I/H/E, you actual gain maybe only 3-4whp. Same with other mod.

mltk53

nice~i wonder how both of those car being manual will do

godfather2

i highly doubt it, maybe with a reflash i'll get close to that figure. now for hondata ...

raheel616

hmmm, i ran my friend who has a 2003 325i which is stick and my outcome was that on the dig at starting he got me but as i left first gear i started pulling ahead and proceeded to gain on him till 100 by then i had a little over 2 and a half cars on him, keep in mind i am auto. The only mods i had were Injen CAI and NST pulleys. the same outcome happened with a couple of his friends that had 325i and 328i

godfather2

^ well, i have more mods than u and i raced an auto

crix868

its pretty interesting. i ran a 07 325i on my way home from school i only have an Fujita CAI and we ran from a 1st gear roll. i owned the BMW by at least 3 cars while i was goin into 3rd by 4th i averaged about 4 cars.

PACman

Interesting, I didn't know BMW had a 2007 325i.

dom

They didn't.

325's were 06's at latest. Having said that I doubt the 325 was racing.

rb1

Yes, for comparable cars it takes near perfect shifting in an MT to take advantage of the gains versus an AT.

One missed shift, either too early, too late, or too slowly and you lose some acceleration that can't be recovered. (Usually, this means you should shift at the redline, but it's possible that the optimal shift point varies slightly from gear to gear).

frenchv

Are you guys sure the TSX can beat a 3 series? I used to own one 04 325ci and that thing was fast and powerful. Driving my TSX feels like walking compare to driving a BMW.

CarbonGray Earl

A 325? I would never think of that as fast and powerful. Sorry, that might be more perception than reality.

I've owned an E36 325is 5MT, and have driven my cousin's slightly modded E46 325i 5AT on numerous occasions, and I would never describe either as "powerful".

Black_6spd

Maybe the dealer tricked you and put a 325ci badge on an M3.

Trackruner228

iTrader: (1)

How embarrassing for the BMW. Not only is it slower then the TSX but it also costs way more for less stuff.

godfather2

^ absolutely

stewie20068

I'm curious why other mods result in less increase from additional mods. I mean why isn't it multiplicative. If you have an injen intake singly you get 15 hp. if you add a comptech header wouldn't that give you the 5hp and allow your intake to flow even more freely also giving you an additional hp boost from your intake? Can you explain?

jaehshim

i miss the old Bimmers...especially when i look at the new E90 interior designs... ew

CarbonGray Earl

E30's are still my favorite BMWs. Compact, light, tossable, etc. Those cars were BMW before they moved the 3 upmarket.

Still some good examples around my area - might have to pick one up just to play with.

Black_6spd

^^ Wouldn't make sense to get another sedan or even coupe as a toy. Get an S2000 to play with!

CarbonGray Earl

Wish I had enough $$ for an S2k!! That would be NICE though .

Cars.com has a couple of good examples of e30's for < $3k, which is doable. Mods are a little cheaper too.

chuson

It's a bitch to answer this question cause I will start writing an essay..... someone can chip in to explain as well...

It will be easier to use e.g to explain.
E.g.
Injen CAI will gain you 5whp/3wtq over STOCK (stock as ALL other parts stock)
DC Header will gain you 12whp/7wtq over STOCK (stock as ALL other parts stock)
RT high-flow cat will gain you 8whp/5wtq over STOCK (stock as ALL other parts stock)
Pulleys will gain you 10whp/5wtq over STOCK (stock as ALL other parts stock)

If you think they all add up, then, you will gain (5+12+8+10=) 35whp and (3+7+5+5=) 20tq. If reality is like this then I will be happy.

The problem is, those gains above are all based on stock condition. Which mean a specific parts has been replaced with a LESS restrictive part, thus result in the power gain. The flow will get better as you mentioned above when all restriction remove, however, there's still a limitation the air-flow path, Engine management output, and variables.

1 point you need to remember is, does more free-flow always = to better performance. The answer is YES and NO. For regular mild-mod N/A car, 2.25" - 2.5" are the best we can get out of. We also need to think of "back pressure" as well, sometimes a restriction is there for purpsoe. FI or Highly tuned cars might benefit from 3" piping, but the result is dead loud.

Our car has NO ECU Management @ this moment, therefore we might not gain the full benefit of having I/H/E/P/C on our car. With custom tuned K-Pro map, I'm 100% we can get 8-10% more whp/wtq over the same car w/ just the reflash.

godfather2

^ nicely put

rb1

A friend has an E46 325i 5MT, and it feels much torque-ier than my 2007 TSX. The only way the TSX stays in the ballpark is if you keep the RPM's way up.

Also, the car mags routinely got low-7 seconds (7.1, 7.2) 0-60 times out of the E46, despite it weighing slightly more than the TSX and having 20 fewer ponies.

Zoopa

What?

CarbonGray Earl

Hey rb1, I don't think there's any disagreement here. I still wouldn't describe a 325 as powerful. Its a matter of what those words mean to you. If its of any consequence, I don't describe the TSX as such, either. Even my own e36 325 5mt did just those same times and had the same HP rating (same engine I believe), and I wouldn't describe it fast or powerful.

As for 0-60 times, I believe traction, gearing, and area under the torque curve (rather than HP) play a large role in 0-60s. Suffice it to say, on this front, the TSX and the E46 have proven to be equal competition for each other. I've seen the manual version of both cars do about the same times.

PACman

You got that straight. That's why there's this....

godfather2

that means i won without breaking a sweat

rsx_r04

What an ignorant statement.

Don't believe in everything you read here, bud.

CGTSX2004

iTrader: (1)

Speaking of ignorant statements...

And don't try to compare Canadian prices to US prices.

h1coupe

cuteguy1414

iTrader: (1)

Any mods want to ban this guy?