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which injectors for 450-500bhp?

Old 05 October 2018, 06:08 PM
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the shreksta
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Default which injectors for 450-500bhp?

i currently have 740cc denso injectors and as i am having a build done next year along with bigger turbo etc i will be needing some new injectors so which ones would be suitable?

for a hawk sti

thanks
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Old 05 October 2018, 06:18 PM
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I'm running 800's @530 but are nearly maxed
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Old 05 October 2018, 06:24 PM
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deatschwerks 850 or1000
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Old 05 October 2018, 06:25 PM
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Originally Posted by domino46 View Post
I'm running 800's @530 but are nearly maxed
are you running a pressure reg aswell?
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Old 05 October 2018, 06:25 PM
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Originally Posted by Jon T View Post
deatschwerks 850 or1000
thanks buddy will look into them
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Old 06 October 2018, 01:54 AM
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I'm on 750,s with a reg @ 553 bhp
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Old 06 October 2018, 06:10 AM
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domino46
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Originally Posted by the shreksta View Post
are you running a pressure reg aswell?
no reg at the mo but is due to be fitted soon lol
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Old 06 October 2018, 08:43 AM
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best quality and value for money (IMO) is the ID1050's..............
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Old 06 October 2018, 08:44 AM
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asnu injectors in mine and are great , uk company aswell
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Old 06 October 2018, 01:27 PM
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Injector Dynamics should be good,
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Old 06 October 2018, 05:42 PM
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I have injection dynamics 850s at the min and they were a bitch to seal up. Ended up having to use 2 seals on each. They are getting changed to deatschwerks next time I have an excuse to remap it.
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Old 07 October 2018, 03:47 PM
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Originally Posted by Jon T View Post
I have injection dynamics 850s at the min and they were a bitch to seal up. Ended up having to use 2 seals on each. They are getting changed to deatschwerks next time I have an excuse to remap it.
where will you get them from?
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Old 08 October 2018, 09:13 AM
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Running ID1000's on mine, perfect fit and performance.
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Old 08 October 2018, 01:14 PM
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Id ask whoever is mapping the car on their opinion.
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Old 14 October 2018, 07:53 AM
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you know it wont be enough at some point. 800cc would be a popular choice but you would be roughly at 90% of their capability. i would go for no other than injector dynamics 1000cc if i was you. very easy on day to day commute very smooth on low revs and very reliable. i made 677 bhp and 741nm torque on my built 2.5 but they were at 97% of their capability.
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Old 14 October 2018, 09:06 AM
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Originally Posted by k_duraman View Post
you know it wont be enough at some point. 800cc would be a popular choice but you would be roughly at 90% of their capability. i would go for no other than injector dynamics 1000cc if i was you. very easy on day to day commute very smooth on low revs and very reliable. i made 677 bhp and 741nm torque on my built 2.5 but they were at 97% of their capability.
677bhp from a 2.5..............thats gotta be the most yet surely?

what was the spec?
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Old 14 October 2018, 09:58 AM
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Originally Posted by the shreksta View Post
677bhp from a 2.5..............thats gotta be the most yet surely?

what was the spec?
There's at least one 2.5 in the states with over 1000bhp!
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Old 14 October 2018, 12:11 PM
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Originally Posted by ScottyPPP View Post
Running ID1000's on mine, perfect fit and performance.
So am I, and I'm more than happy with them too.

However, I'm only running 405bhp.
As I worked my way up from the low 300s every tuner (Powerstation, ScoobyClinic, Rawle, Enginetuner) before they started the mapping session said they were too big and won't give stable idling or they'd be difficult to fine tune. Yet, none encountered any problems with the ID1000s.
I get the impression that they're a 'fit and forget' option in that they can handle a wide range from medium to very big power.
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Old 14 October 2018, 03:57 PM
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Shreksta, are you sure you need bigger injectors for 500hp?

[email protected] used to advise as a rough guide that you could divide the cc with 1.35 to arrive at a bhp figure the injectors would support at 3 bar on a Subaru.

For 740, this works out at about 550.

​​
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Old 14 October 2018, 05:13 PM
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650-740 will do for 500, but I'd go with the latter to give a little room left over instead of strangling the injector with the lower cc

Last edited by bustaMOVEs; 14 October 2018 at 05:15 PM.
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Old 14 October 2018, 06:12 PM
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If he was starting from zero injectorwise I'd agree completely, but if he's got injectors that will do the power already it seems somewhat wasteful to spunk another 400 or so on injectors
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Old 14 October 2018, 06:42 PM
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Originally Posted by Henrik View Post
Shreksta, are you sure you need bigger injectors for 500hp?

[email protected] used to advise as a rough guide that you could divide the cc with 1.35 to arrive at a bhp figure the injectors would support at 3 bar on a Subaru.

For 740, this works out at about 550.

​​
hi

im only going on what ive been advised by the different tuners ive contacted. if 740cc will do then im more than happy to not spend another 400
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Old 14 October 2018, 08:59 PM
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I’m going id1000s on mine.
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