Why Siemens injectors over bosh?

Reply Subscribe

Thread Tools

Search this Thread

Jan 4, 2012 | 11:13 PM

rsdan123

Thread Starter

I've found that life I needed.. It's HERE!!

iTrader: (3)

Joined: Oct 2007

Posts: 1,174

Likes: 1

From: Farnborough, Hampshire

Why Siemens injectors over bosh?

As title really, why are Siemens 55's better then bosh 403's or is it just cause the Siemens are cheaper???
Cheers
Danny

Jan 4, 2012 | 11:24 PM

Rsmat

Professional Waffler

iTrader: (2)

Joined: May 2004

Posts: 27,262

Likes: 585

From: either at work or on way :)

Cheaper.

Jan 5, 2012 | 12:57 AM

Dingy

PassionFord Post Troll

Joined: Aug 2006

Posts: 3,191

Likes: 0

From: Sydney, NSW

modern spray pattern and modern injector over an old design also.

Jan 5, 2012 | 01:53 AM

BRAMMER

PassionFord Post Whore!!

iTrader: (23)

Joined: Dec 2004

Posts: 9,665

Likes: 16

From: The North

My old 403 had to have the nozzle ends chopped off and Siemens no chopping so......

Jan 5, 2012 | 09:15 AM

gray_rs

Part of the Furniture

Joined: Nov 2008

Posts: 173

Likes: 0

From: dundee

I thought there would have been more benefits with siemens rather than just price?

Jan 5, 2012 | 09:40 AM

Karl 3dr

PassionFord Post Whore!!

iTrader: (9)

Joined: Jun 2004

Posts: 5,587

Likes: 37

From: here

They're meant to have a better spray pattern aren't they?

Jan 5, 2012 | 10:19 AM

Rsmat

Professional Waffler

iTrader: (2)

Joined: May 2004

Posts: 27,262

Likes: 585

From: either at work or on way :)

They flow more than greens. Also

Trending Topics

Passionford forum 2025

11

1.3k

Jan 5, 2012 | 10:22 AM

Paul_RS

PassionFord Post Whore!!

iTrader: (4)

Joined: May 2004

Posts: 7,886

Likes: 35

From: Bangor, Northern Ireland

403s are greys though

Direct comparison from 55lbs to 403s, 403 - horrible idle until closed loop was fitted, 55lbs brilliant idle even without closed loop - both on MSD chips.

Jan 5, 2012 | 10:24 AM

Rsmat

Professional Waffler

iTrader: (2)

Joined: May 2004

Posts: 27,262

Likes: 585

From: either at work or on way :)

Ooops my bad.

Jan 5, 2012 | 11:07 AM

#10

Jay,

Sponsor

iTrader: (4)

Joined: May 2004

Posts: 25,221

Likes: 407

From: south east

Quote:

Originally Posted by Paul_RS

403s are greys though

Direct comparison from 55lbs to 403s, 403 - horrible idle until closed loop was fitted, 55lbs brilliant idle even without closed loop - both on MSD chips.

exactly better spray pattern and when your using a big injector an having to close the duration more at idle they handle it properly plus the injector responce is better under load so fuel is better managed

Jan 5, 2012 | 11:36 AM

#11

JamesH

10K+ Poster!!

iTrader: (21)

Joined: Jul 2003

Posts: 10,807

Likes: 8

From: .

I've heard the new Bosch 750cc and 1000cc injectors are better than the Siemens range...

Jan 5, 2012 | 03:50 PM

#12

Psycho Warren

Carbon Crazy

iTrader: (5)

Joined: Jun 2004

Posts: 20,725

Likes: 128

From: Stoke on Trent

surely bosch make newer design injectors to similar parameters as siemens??

Jan 6, 2012 | 01:00 AM

#13

Dingy

PassionFord Post Troll

Joined: Aug 2006

Posts: 3,191

Likes: 0

From: Sydney, NSW

Quote:

Originally Posted by Paul_RS

403s are greys though

Direct comparison from 55lbs to 403s, 403 - horrible idle until closed loop was fitted, 55lbs brilliant idle even without closed loop - both on MSD chips.

My guessing is its not mapped properly then.

I have 83lb siemens no closed loop and its perfect.

Jan 6, 2012 | 09:08 AM

#14

gray_rs

Part of the Furniture

Joined: Nov 2008

Posts: 173

Likes: 0

From: dundee

Quote:

Originally Posted by Dingy

My guessing is its not mapped properly then.

I have 83lb siemens no closed loop and its perfect.

I think you have misread the above , because he is saying he never had closed loop with Bosch and it's idle was not great but using siemens still without closed loop and it was better

Jan 6, 2012 | 09:49 PM

#15

stevieturbo

C**t

Joined: Oct 2003

Posts: 7,998

Likes: 269

From: Norn Iron

Quote:

Originally Posted by warrenpenalver

surely bosch make newer design injectors to similar parameters as siemens??

Better...most of the modern 1000cc and bigger stuff now are Bosch variants.

I think they also do some around 800cc as well now

Jan 6, 2012 | 10:02 PM

#16

Rollinz

Too many posts.. I need a life!!

Joined: Nov 2009

Posts: 848

Likes: 0

From: barnsley

siemens 83lbs

14.3 AFR tick over,
drives as good as my 1.6 runaround and thats with no closed loop on DTA managment.

swapping them tho for ID1200 "injector dynamics, 1200cc "