Anyone put a 325 throttle body on a 320?

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Conan
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Thu Sep 22, 2005 5:57 pm

just got a 325 throttle body off ebay, (someone off the zone, don't know who)

Anyone done the swap and know how effective it is. Planning on getting chip from zone shop to go with to make sure fuelling matches new air intake?

Any thoughts...................
'91 Sterling Silver e30 320i SE
'96 Avus Blue e34 525i Sport
'92 Alpine White e30 318iS Touring
'86 Alpine White e28 M5 (008/187)
'02 Titan Silver e39 530d Sport Touring
'54 Cosmos Black e61 535d MSport Touring
'07 Sapphire Black e61 M5 Touring

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Simon13
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Thu Sep 22, 2005 6:00 pm

a few people have done it and it definately livens up a 320 a treat.

just need some patience and a dremel is all i know!

The airflow meter will adjust the fueling to amount of air going in, so no worries about getting a lean mixture

HTH
Dominitry
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Thu Sep 22, 2005 6:05 pm

Richy325iTouring has recently done this mod and noticed improvements, well worth it i day.
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dazleeds
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Thu Sep 22, 2005 6:07 pm

ive done mine and its a def improvement especialy mid of rev range

putting a viper2 chip in at weekend see how that goes ??

so far so good Daz
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in the shit,the one to blame,yeh its all my fault ;)
Conan
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Thu Sep 22, 2005 6:31 pm

Did you do it yourself and how long did it take? How did you bore out the manifold, with a electricdrill?
'91 Sterling Silver e30 320i SE
'96 Avus Blue e34 525i Sport
'92 Alpine White e30 318iS Touring
'86 Alpine White e28 M5 (008/187)
'02 Titan Silver e39 530d Sport Touring
'54 Cosmos Black e61 535d MSport Touring
'07 Sapphire Black e61 M5 Touring

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Richy325iTouring
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Thu Sep 22, 2005 6:38 pm

i used a file in the end as i rand out of dremil bits
just need some paitaints anda cpl spare hours to do an effective job

dont take to much off from thebottom though or you will screw up the manifold

also there is a how to guide in total bmw from a cpl months back


Richy
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Conan
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Thu Sep 22, 2005 6:44 pm

yeah i've got that, what gave me the idea in the first place. Does the mod work without a chip or do you need one to really feel the difference.

Also is this gonna hurt my fuel consump?!?!?!?
'91 Sterling Silver e30 320i SE
'96 Avus Blue e34 525i Sport
'92 Alpine White e30 318iS Touring
'86 Alpine White e28 M5 (008/187)
'02 Titan Silver e39 530d Sport Touring
'54 Cosmos Black e61 535d MSport Touring
'07 Sapphire Black e61 M5 Touring

[
Richy325iTouring
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Thu Sep 22, 2005 6:48 pm

works without a chip
better throttle response low to mid range
at the moment its on par with an e34 520 24v
i need a chip now though
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Simon13
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Thu Sep 22, 2005 7:01 pm

theres an article on this mod in total bmw a couple of months ago, done by andy everett. That should help u mate. He did it to one of his and was so impressed by it he let us all know!

when his and my car were (325) on the nurburgring we had a nice race on the long straight there and i had to push my car hard to get past!

So it defo gives a few ponies
Conan
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Thu Sep 22, 2005 7:30 pm

Simon13 wrote:
when his and my car were (325) on the nurburgring we had a nice race on the long straight there and i had to push my car hard to get past!

So it defo gives a few ponies
Thats what i want to hear! winkeye
'91 Sterling Silver e30 320i SE
'96 Avus Blue e34 525i Sport
'92 Alpine White e30 318iS Touring
'86 Alpine White e28 M5 (008/187)
'02 Titan Silver e39 530d Sport Touring
'54 Cosmos Black e61 535d MSport Touring
'07 Sapphire Black e61 M5 Touring

[
johnono
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Thu Sep 22, 2005 10:10 pm

Pm Iain Templ8e30 , He has an Excellent How-to guide for the mod.

I have it, but itԚ´s Iains so pm him first, dont think heԚ´ll mind atall (top geeza ;)
dazleeds
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Thu Sep 22, 2005 10:17 pm

yes def recomend temple8e30 iain

he did my manifold :thumb:

think its the one he did when he wrote article :woohoo:
www.oldskoolfantasy.co.uk
in the shit,the one to blame,yeh its all my fault ;)
Conan
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Fri Sep 23, 2005 1:34 am

cheers :D
'91 Sterling Silver e30 320i SE
'96 Avus Blue e34 525i Sport
'92 Alpine White e30 318iS Touring
'86 Alpine White e28 M5 (008/187)
'02 Titan Silver e39 530d Sport Touring
'54 Cosmos Black e61 535d MSport Touring
'07 Sapphire Black e61 M5 Touring

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BrAdZ
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Fri Sep 23, 2005 8:32 am

i put mine on last weekend, but i dint bore out the inlet manifold because i was too scared to get filings in there!! whats the knack to not get anything in there? do you take the inlet manifold off?
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johnono
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Fri Sep 23, 2005 11:41 am

yeap, but its not a 2 bolt job really

or u could stuff the inler with paper towels/toilet paper and give it a GOOD clean after ;)
e30-320i
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Sat Sep 24, 2005 1:30 pm

i stuffed an oily rag in the hole when i done mine mate that caught all the crap.


i have done the throttle body added a cone filter (with diy heat shield) and a zone chip and its made a big improvment my car just felt gutless before.
booked in for a rolling road session on wednesday so i'll find out if it upped the power at all
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StuBeeDoo
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Sat Sep 24, 2005 1:54 pm

e30-320i wrote:booked in for a rolling road session on wednesday so i'll find out if it upped the power at all
I'll be fitting a 325i TB next month when I change the cylinder head.
Would you post up the results of your roller sesion please Dude??
Cheers
Stuart.
This is why I no longer drive an E30......

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e30-320i
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Sat Sep 24, 2005 2:17 pm

Would you post up the results of your roller sesion please Dude??
Cheers
Stuart.[/quote]


i'll post them up on wendesday night mate i dunno exactly what bhp it was before but i know they should be around 129 standard so it'll give a rough idea of any gains..
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Andyboy999
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Sat Sep 24, 2005 7:11 pm

I did the article for TBMW on my old Gold Ring Slag. You need to open up the manifold otherwise it's a waste of time - you've still got to get air through that hole. A dremel is sort of okay but you need CUTTING drills, not grinding. Grinding ones clog up instantly with ally dust. Or use a very coarse file. Stuff the manifold full of really oily rags. Literally dip them in oil so that all the swarf sticks to them.
It works well but you really do need a chip - I used one of Jaysons (ChippedUK) Viper 2 chips and it really works. I put the old chip back in for the MOT and it felt like the handbrake was on. The standard 320i runs lean because it's a cat prepped ECU and with the extra air going in must run pretty lean. Also talk to Ant here as he'll do something similar.
The last time I drove it was at Croft and it went well. Didn't use any more fuel than before either. Acceleration in 4th and 5th was excellent - when I was racing Simon's car at the Ring, I was running a 3.64 diff against Simon's 3.91. With the same diff, he would have been even harder pushed to get by. I reckon my 320i was doing 140 - 145 bhp but never had it dynoed. The old 2 litre really does sing when opened up and it's sooo smooth compared to a 2.5.
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Andyboy999
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Sat Sep 24, 2005 7:12 pm

I did the article for TBMW on my old Gold Ring Slag. You need to open up the manifold otherwise it's a waste of time - you've still got to get air through that hole. A dremel is sort of okay but you need CUTTING drills, not grinding. Grinding ones clog up instantly with ally dust. Or use a very coarse file. Stuff the manifold full of really oily rags. Literally dip them in oil so that all the swarf sticks to them.
It works well but you really do need a chip - I used one of Jaysons (ChippedUK) Viper 2 chips and it really works. I put the old chip back in for the MOT and it felt like the handbrake was on. The standard 320i runs lean because it's a cat prepped ECU and with the extra air going in must run pretty lean. Also talk to Ant here as he'll do something similar.
The last time I drove it was at Croft and it went well. Didn't use any more fuel than before either. Acceleration in 4th and 5th was excellent - when I was racing Simon's car at the Ring, I was running a 3.64 diff against Simon's 3.91. With the same diff, he would have been even harder pushed to get by. I reckon my 320i was doing 140 - 145 bhp but never had it dynoed. The old 2 litre really does sing when opened up and it's sooo smooth compared to a 2.5.
BrAdZ
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Mon Sep 26, 2005 11:40 am

hmmmm im noticing a bit of a diffrence in fuel consumption :S
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johnono
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Mon Sep 26, 2005 11:50 am

adjust the afm screw to get a lower fuel consumption ;)

(u will need a machine to check it on though :( )
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