Limit of siemens 55lb injectors?
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22-11-2011, 02:33 PM
#17
i think he had a 44psi spkie on the roller T4
we were having problems keeping the laptop open, it kept slamming shut as it came on boost
Its a shame they are running out, i think we have the last of them here in stock, i dont think anyone can get hold of them anymore.
Last edited by James @ M Developments.; 22-11-2011 at 02:39 PM.
22-11-2011, 02:55 PM
#18
Wennys old engine we mapped was running 83s pretty hard, they do good power. i think he had a 44psi spkie on the roller T4
we were having problems keeping the laptop open, it kept slamming shut as it came on boost
Its a shame they are running out, i think we have the last of them here in stock, i dont think anyone can get hold of them anymore.
i think he had a 44psi spkie on the roller T4we were having problems keeping the laptop open, it kept slamming shut as it came on boost
Its a shame they are running out, i think we have the last of them here in stock, i dont think anyone can get hold of them anymore.
what map sensor - 5 bar?bet that was lively and how the fook do you map it when its like that? big balls imho lol.
Im hoping to run mine fairly hard but want it to be reliable, i hoping to hold 2 bar to the limiter and nice spike in the mid range
22-11-2011, 03:13 PM
#21
well, it cant see past its maximum pressure, but you can fuel the top lines for what ever you want, the map sensor just says maximum,
you can get issues, as an example, where you fuel the top lines for 40psi, but obviously it will then be rich at 30psi, because there is fuel there for 40psi and from 30 to 40 the map sensor is still only saying maximum,
But, generally they dont stay at 30psi for long as revs are climbing very fast in those circumstances.
I think its a much better comprimise, than re scaling the whole map to work with a 5bar and the limited break points within, You would be comprimisng the drivability doing it that way, and thats what most cars need to be best at. They spend most of the time in cruise and idle, so the more control you have down there the better really.
you can get issues, as an example, where you fuel the top lines for 40psi, but obviously it will then be rich at 30psi, because there is fuel there for 40psi and from 30 to 40 the map sensor is still only saying maximum,
But, generally they dont stay at 30psi for long as revs are climbing very fast in those circumstances.
I think its a much better comprimise, than re scaling the whole map to work with a 5bar and the limited break points within, You would be comprimisng the drivability doing it that way, and thats what most cars need to be best at. They spend most of the time in cruise and idle, so the more control you have down there the better really.
Last edited by James @ M Developments.; 22-11-2011 at 03:24 PM.
24-03-2013, 11:15 PM
#27
Are the the Siemens 55lb injectors a direct fit to Cossie, how about Bosch grey injectors? There's been talk that they no more make the 55's so the grey injectors are probably the choice for Stage 3... If anyone have the correct part number for Siemens 55's I'd like to know it, in case I find a set of those.
25-03-2013, 07:22 AM
#28
I'd wait a little as i'd imagine the tuners will be looking for an alternative injector than going back to 803's or 403's. Speak to Stu at motorsport-developments he'll be able to advise you on your needs
25-03-2013, 09:59 AM
#29
I'd wait a little as i'd imagine the tuners will be looking for an alternative injector than going back to 803's or 403's. Speak to Stu at motorsport-developments he'll be able to advise you on your needs
25-03-2013, 04:31 PM
#30
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25-03-2013, 05:44 PM
#31
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Maram shafted for a start...
The turbo brand new cost me less than £500 it is on trial .. It's done 1400 hard miles upto now with no issues and god knows what punishment while mapping where it was running 38psi ...but the engine could not consume 38 in the end. .. It will this year tho as the engine is going to run more boost.
25-03-2013, 06:05 PM
#32
Are the the Siemens 55lb injectors a direct fit to Cossie, how about Bosch grey injectors? There's been talk that they no more make the 55's so the grey injectors are probably the choice for Stage 3... If anyone have the correct part number for Siemens 55's I'd like to know it, in case I find a set of those.
IIRC you need a fitting kit for bosch injectors
25-03-2013, 07:20 PM
#33
http://www.fiveomotorsport.com/10399us580-570/580cc
The site claims that they have direct replacement injector for the Siemens 55's.
Bosch/Siemens-type custom-manufactured and flow-matched Fiveo "Asphalt Series" high-performance, low-impedance fuel injectors.This is a modified fuel injector set - We custom-mill brand new, Japanese-made fuel injector cores in large-quantity batches to achieve the highest quality product.
This injector is a direct replacement for Siemens FI-11402, 3102
This injector is a direct replacement for Siemens FI-11402, 3102
25-03-2013, 07:25 PM
#34
Ty for the info. BTW, I found this link:
http://www.fiveomotorsport.com/10399us580-570/580cc
The site claims that they have direct replacement injector for the Siemens 55's.
http://www.fiveomotorsport.com/10399us580-570/580cc
The site claims that they have direct replacement injector for the Siemens 55's.
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