24lb injectors in a S4?

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08 Nov 2011 07:09 #6792 by the flying scotsman
24lb injectors in a S4? was created by the flying scotsman
Ive been imformed that the 19lb injectors are NLA but 24lb injectors are available.....any issues using the larger units?
thx....Malcolm

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08 Nov 2011 10:22 #6797 by 928mac
Replied by 928mac on topic 24lb injectors in a S4?
Malcolm, I do not see an issue with the larger injectors except the A/F ratio will need to be re-mapped with a Shark/T.

IMO the 19 lb injectors run close to max duty when called to do so.
I believe that the 24 lb 4 hole injectors are a good choice.
I also believe that the Ford 4 hole pintal spray pattern is a better choice.

The beyatch will be they are bigger and I would think that you need to let your LH know. So Sharktune and it should be fine.

More Power Scottie . . . . More Power :D

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08 Nov 2011 10:33 #6799 by 928mac
Replied by 928mac on topic 24lb injectors in a S4?
BTW, I though you already bought some?

In this thread you gots some new injectors or were they stock?
forums.rennlist.com/rennforums/928-forum...light=ford+injectors

post #27 says to use the Type 2 for the correct one with the slot.

Hope this helps buddy

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08 Nov 2011 19:13 #6813 by the flying scotsman
Replied by the flying scotsman on topic 24lb injectors in a S4?
I did buy new 4 hole Ford injectors for my car Brad.....they're in there now :)

This post is for another customers car who has done some research and cant find the same as I, readily available :)

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08 Nov 2011 21:45 #6819 by 928mac
Replied by 928mac on topic 24lb injectors in a S4?

I did buy new 4 hole Ford injectors for my car Brad.....they're in there now :)

This post is for another customers car who has done some research and cant find the same as I, readily available :)


Ya I am following the thread.
did you install the 19s or the 24s

if the 24s? did you have to retune

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08 Nov 2011 22:51 #6821 by the flying scotsman
Replied by the flying scotsman on topic 24lb injectors in a S4?
this is the car you saw at my place that the owner bought redond Ford 19lbs for and it now runs with a very bad vibe. the decisoin made was to inspect the injectors and one fell apart when bing removed and the pintle dropped down the intake.

Now the thought is to remove the intake, remove the fallen pintle, inspect all for any issues and rebuild with new injectors but the issue now is finding new 19lb units.

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08 Nov 2011 23:45 #6822 by 928mac
Replied by 928mac on topic 24lb injectors in a S4?

this is the car you saw at my place that the owner bought redond Ford 19lbs for and it now runs with a very bad vibe. the decisoin made was to inspect the injectors and one fell apart when bing removed and the pintle dropped down the intake.

Now the thought is to remove the intake, remove the fallen pintle, inspect all for any issues and rebuild with new injectors but the issue now is finding new 19lb units.


Ahhhhh now I understand, I didn't know that the stock injectors were hard to find

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09 Nov 2011 21:08 #6842 by the flying scotsman
Replied by the flying scotsman on topic 24lb injectors in a S4?
this is a parallel thread as to what I had running on Rlist with the following conclusion:

installing 24LB fuel injectors in a unmolested 87 S4 without specific sharktuning would cause issues and the stock 19LB FIs should be used with the 4 hole Ford units giving better spray and added horse power.

hope this helps others pondering same :)

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10 Nov 2011 14:57 #6861 by 928mac
Replied by 928mac on topic 24lb injectors in a S4?
So dose this mean that we should not install #24 injectors on our cars?

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10 Nov 2011 16:48 #6864 by the flying scotsman
Replied by the flying scotsman on topic 24lb injectors in a S4?
Unless you have the ability to sharktune AND and other power related items (exhaust, cams, etc.) then YES, DO NOT INSTALL 24lb injectors

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11 Nov 2011 10:16 #6877 by the flying scotsman
Replied by the flying scotsman on topic 24lb injectors in a S4?
Im also going to add that if your attempting to any fuel related work on your 928 or any car for that matter you should have a great amount of mechanical experience.
As noted in another thread there can be very severe consequences for fuel related issues.

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