NefMoto > Technical > Tuning > Upgrading injectors on my Audi TT 225
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Author Topic: Upgrading injectors on my Audi TT 225  (Read 5848 times)
elektrochipper
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« on: March 07, 2014, 12:07:44 PM »
Hi,
I have 6 used injectors from a Porsche 911. They are a Bosch 0280150470.
I'm thinking about change the original injectors of my Audi TT with APX engine and ECU ME7.5 with these. The original are Bosch 0280155892.
They fit perfectly but the original ones have a longer noozle. Is that a problem?
I remaped my car several times, and for going better i need to inject more fuel and more airband more air is possible because i made a turbo upgrade...
Anyone can help me with this?

Thanks a lot!
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snakey001
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« Reply #1 on: March 08, 2014, 04:02:02 AM »
If the Flow rate table is correct.
http://www.polog40.co.uk/article_injector_table.php


0280150470 they are 229 cc/min at 3bar
Oem audi tt 225 injectors are 358cc/min at 3bar

Are you sure that you want to change these?
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littco
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« Reply #2 on: March 08, 2014, 06:14:53 AM »
Quote from: elektrochipper on March 07, 2014, 12:07:44 PM
Hi,
I have 6 used injectors from a Porsche 911. They are a Bosch 0280150470.
I'm thinking about change the original injectors of my Audi TT with APX engine and ECU ME7.5 with these. The original are Bosch 0280155892.
They fit perfectly but the original ones have a longer noozle. Is that a problem?
I remaped my car several times, and for going better i need to inject more fuel and more airband more air is possible because i made a turbo upgrade...
Anyone can help me with this?

Thanks a lot!

TT injectors on a stage 2 run at 100dc at around 280bhp.. They are 386cc if you don't fancy fitting a 4 bar fpr, which will quickly kill the pump then run 440 or better 550cc injectors..
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elektrochipper
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« Reply #3 on: March 10, 2014, 06:06:56 AM »
Hi,
It sounds a little strange the TT injectors delivering more fuel than Porsche injectors...
I also have the pressure control valve of fuel of Porsche which is the same of TT, but TT is regulated for 3 Bar and Porsche is for 3.8 Bar.

This valve is controlled by the vacuum at intake manifold so when the motor is in aceleration the valve is closed and have the full pump pressure on the rail, right?
« Last Edit: March 10, 2014, 06:12:28 AM by elektrochipper » Logged
stuklr
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« Reply #4 on: March 10, 2014, 06:39:35 AM »
What model 911? Remember the 911 will have six injectors over your four. The base NA carreras only made 75 more hp than your TT in stock form. No need for big injectors when there are more of them at a higher pressure.
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elektrochipper
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« Reply #5 on: March 10, 2014, 07:52:38 AM »
Okay i'm understanding!
The Porsche is a Boxter 2.7. May be i can use the fuel pressure regulator valve of Porsche, what do you think?

I have the TT tuned and i'm always making some tests with maps
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_mumin_
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« Reply #6 on: March 10, 2014, 07:55:51 AM »
Leave alone these Porsche injectors.
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elektrochipper
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« Reply #7 on: March 10, 2014, 02:04:47 PM »
Okey I left Smiley

Stock injectors mounted! I will look for other EV12's injectors with more debit!

Thanks for all help
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