Quickest E30 318is.. how to do it?

IMO
the 318is is a very nimble motor with a great turn of speed when the revs are kept up there, mine was standard except for a cat replacement box and was an extremely pleasureable car to drive. I think it would definately give a normal 325i a run for its money but stand very little chance on a 325i sport. I know the sport engine is the same as a normal 325i but the overall package, handling etc. feels so much different. The power is so much more useable in sport guise and I have found the 325i sport to be a great deal quicker than people make out. I found myself constantly surprising cars that were 'supposed' to be a lot quicker (2.5 boxster for example). Obviously some years ago, now i just take it easy in the auto.
My own opinion would be to buy a good sport instead.

I've owned a few E30s, and will probably always have one.
1987 318i
1989 325i 4dr
1991 318is
2 x 1991 325i sports
1991 325i convertible motorsport


http://www.e30zone.co.uk/cabandy.asp

A chip an a throttle body for uner £200!. It cost me over £200 just for a chip for a Ford I used to own, although this included a run on a rolling road. As I said before i'm still very sceptical! If this mod does make 170bhp, you might want to talk to BMW. I'm sure they would be very interested.

http://www.e30zone.co.uk/

Keep an eye on the Tuning Zone section on the above link. It should be up and running soon.

I have to say that I am extremely sceptical that a chip ,even in conjuction with an enlarged throttle body will produce that kind of power increase. In order to do this the standard throttle body would have to be hugely restrictive. I would have thought that you would at least need a change the cams as well to ge thtat kind of power. I could be wrong however!

Also speedos are inacurate and normally always tell you  that you are going faster than you actually are. The inaccuracy gets greater as your speed increases. I once new a guy who said his 1.8Mk2 cavalier SRI would do 138mph, another bloke who said his 1.3 astra would do 122mph. I was also in a 1.3 maestro that was apparently doing 118 mph according to the speedo. If you look at most road tests run by magazines like Topgear and EVO  cars tend to be slightly slower than the manufactures quoted top speed, not faster. 

The chip available from E30 Zone which has been proven to increase power from 139bhp on a standard 318iS to 170bhp was in conjunction with an enlarged throttle body. The rev limit is also raised by the chip to 7,000rpm.

There are rolling road graphs to confirm the results of the test car.

35+bhp CHIPS??

Can I have a bag full please?? oops sorry... 

falkster wrote: As far as I am aware there is no difference between the 325i and the sport both have 172bhp (If i remember correctly). The 152mph  that I got was out of my old 325ise.

Yep for sure, totally agree, same engine + same BHP but did some of the IS's not have revised gearing and a different LSD final ratio as well?

Edited by Madrab

dbanbery wrote: jonp my jokes are far worse, far far worse.. i prefer spicy flavour.... my 318 i crap in 1st too... chris, doesnt setting off in second screw your clutch faster?

Dave

Sounds stupid but 325s second was/are more like a first. If I set off in second in my M3 it would shaft the clutch.

Chips are good! They do increase power (slightly).. but driveability is vastly improved. I had a Alfa 155 16v which i chiped. reved to 7500rpm.

Salted

 

Sorry.

beema318is wrote: O yeah... B Purcell's car does 0-60 in the low 8s... which is very reasonable... this could give a 325 something to remember... I  also found some info on the E30Zone site about a new chip being checked out, costs around £175 and supposed to push 170bhp out of the engine... Im checkin that option out aswell...

Thats got to be total nonsense. No way can you get 35bhp from a chip unless its a turbo'd car.

You would usually expect about 10% from a new chip unless you get your ecu remapped and they will sort you a chip out that is specifically for your car but you still wont see that improvement.

If it works (which is highly unlikely) give me the number and I will get one for my M3. All those guys on trackdays that have spent £,000s on their engines and are pushing little more than 260bhp would be spitting blood.

Sarcasm over

Sorry

Madrab wrote: falkster I'm just running a 325i mate not an IS. Does your IS get over the 150 mph mark...ooer!!

 

As far as I am aware there is no difference between the 325i and the sport both have 172bhp (If i remember correctly). The 152mph  that I got was out of my old 325ise.