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What injectors for 400bhp?

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Old 05 December 2011, 12:24 PM
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Shaks-STI
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Default What injectors for 400bhp?

Hello

I am looking for injectors to fit MY98 Type R, its fully forged engine on 2.5 block, just wanted to know what injectors i should buy to reach that sort of power.

Links would be very helpfull UK/USA doenst matter.

I will have all the supporting mods to reach that power ie. gearbox, turbo, intercooler and brembos to stop the car as well im just unsure on which injectors should i go for.

Thanks

SORRY posted in the wrong session

Last edited by Shaks-STI; 05 December 2011 at 01:00 PM.
Old 05 December 2011, 01:13 PM
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EJ22 LAD
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i would go for some 740's m8, then you have more scope for further modding
Old 05 December 2011, 01:26 PM
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550cc are unfortunately too marginal - some make only 380+... Others well over 420!

So go for 650cc - they'll clear it, with lots of headroom to spare. Or, as above, 740cc. But both WILL be prohibitively expensive.


The best route is to buy a set of used OEM 440cc "yellows" (£40+) - loads on here and eBay. Then send them off to Mark Aigin at Lateral Performance for ASNU ultrasonic cleaning and flow-matching to 930cc. Price is £185 +VAT = £225.

Last edited by joz8968; 05 December 2011 at 01:29 PM.
Old 05 December 2011, 01:26 PM
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alcazar
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Mine, with the same basic spec, runs 740's.
Old 05 December 2011, 01:29 PM
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Shaks-STI
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Originally Posted by joz8968
650cc will clear it - with headroom to spare. (550cc marginal).

Or as above 740cc.

But bothe WILL be massively expensive.

The best route is to buy a set of used OEM 440cc "yellows" (£40+)... Then send them off to Mark Aigin at Lateral Performance for ASNU ultrasonic cleaning and flow-matching to 930cc. Price is £185 +VAT = £225.
Thanks for the replies guys

I have the 440cc yellow at the moment so i think thats what i will do, but wont 930cc be overkill for that kind of power?
Old 05 December 2011, 01:34 PM
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Over kill yes but as said, it allows room for more improvements later down the line should you wish.
Old 05 December 2011, 01:34 PM
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Originally Posted by BLACKSTI97
Thanks for the replies guys

I have the 440cc yellow at the moment so i think thats what i will do, but wont 930cc be overkill for that kind of power?
Well yes.

But it's worth it to save shedlaods of cash and to be 'future proofed' (into the 600s bhp!!!)


The only real thing to worry about is idling/low rpms - sometimes too big a cc can cause rough low speed running.

But they're reflowed with a "V-spray" pattern - i.e. 2 smaller jets of fuel leaving the pintle in an inverted "V" pattern. This aids atomisation and Mark says they'll work particularly well with aftermarket ECUs, such as Simtek, Syvecs, etc...

Last edited by joz8968; 05 December 2011 at 01:38 PM.
Old 05 December 2011, 01:36 PM
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thats the they to go then will contact Mark and arrange to have it done.

thanks once again guys
Old 05 December 2011, 01:42 PM
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Where abouts in Leic are you?

I too am a "Leicesterite" lol
Old 05 December 2011, 01:46 PM
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Originally Posted by joz8968
Where abouts in Leic are you?

I too am a "Leicesterite" lol
Evington

what about you mate
Old 05 December 2011, 01:50 PM
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LE3 area.

In one of the side roads off the Hinckley Road.

Last edited by joz8968; 05 December 2011 at 01:52 PM.
Old 05 December 2011, 01:52 PM
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Originally Posted by joz8968
In one of the side roads off the Hinckley Road, A47. Near to the cop shop/church.
Nice my mate leaves arround there so i do pass A47 when i go to his house. i have not seen a scooby arround there yet will keep my eyes open. lol
Old 05 December 2011, 01:53 PM
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I know where there maybe a set for sale.......
Old 05 December 2011, 01:54 PM
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Originally Posted by banny sti
I know where there maybe a set for sale.......
Which one's mate?
Old 05 December 2011, 01:56 PM
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Originally Posted by BLACKSTI97
Which one's mate?
Lateral modified 440s, they were checked over pretty recently too by Lateral
Old 05 December 2011, 02:02 PM
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Originally Posted by banny sti
Lateral modified 440s, they were checked over pretty recently too by Lateral
If possible let me know who has them and how much they are going for please. thanks mate
Old 05 December 2011, 03:44 PM
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Originally Posted by banny sti
Lateral modified 440s, they were checked over pretty recently too by Lateral
banny, would these be Grant74's - currently with API?
Old 05 December 2011, 03:48 PM
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Theres always a compromise when tuning. What would be the trade-off with fitting overly large injectors?
Old 05 December 2011, 03:51 PM
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See post #7 ^^^

Plus, the ECU may find it hard to control low IDC - so worse fuel consumption could be in the offing(?)

Last edited by joz8968; 05 December 2011 at 03:53 PM.
Old 05 December 2011, 04:28 PM
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https://www.scoobynet.com/subaru-par...injectors.html
Old 05 December 2011, 07:31 PM
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eggy. they'll be top feeds. If the OP is modding his Classic? (as in his avatar), then he needs Classic side feeds.

Although that said, I think Carl Davy does a top feed to side feed conversion kit - is it rails?
Old 05 December 2011, 08:02 PM
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Suprised no one mentioned sti pinks and fpr will hit your target and have known/ guarranteed fuel pressure, 3/3.5 bar and a set of pinks will see you to 450 no probs.

Old 06 December 2011, 08:13 AM
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Shaks-STI
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Guys i have forgot to mention that i have FPR and parallel fuel mod done too, also i will be running the new ESL for V3/V4, Ditchmyster STI pinks are top feed aren't they? I don't want to mod my fuel rails tbh.
Old 06 December 2011, 05:06 PM
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They are indeed, but as said the can be modded, think thats your cheapest route.
Old 07 December 2011, 08:08 AM
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I will look into both option and see what i would benefit the most, cheers for the help guys
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