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Max bhp on standard injectors/ top mount for blob wrx?

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Old 22 April 2014, 02:29 PM
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ditchmyster
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Default Max bhp on standard injectors/ top mount for blob wrx?

As the title, what's the max that the standard stuff will achieve. I'm trying to decide which turbo to go for either a billet td04 which will hit around 300bhp or a hybrid billet td04 which will hit around the 330bhp mark.

The tight wad in me doesn't want to shell out for injectors and sti tmic as it's just a daily and I have another project on the go. I do however have a fpr sat in the garage that I don't mind chucking at the job if that will improve things.

The reason I ask is obviously I don't want to shell out the extra £200 on the hybrid if i'm going to hit max injector duty or not be able to suck enough cold air in to feed it all the way up to 330bhp.

Thoughts and experiences please.
Old 22 April 2014, 02:40 PM
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banny sti
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Tmic will do over 350bhp as its an easy upgrade for a classic compared to the bigger sti one, not sure what size injectors on the wrx but if they are 440cc then same for them to
Old 22 April 2014, 02:46 PM
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ditchmyster
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Cheers again Banny.

So why is everyone so keen on STi top mount and injectors, doesn't make sense if the wrx stuff will go that far.

Would the FPR increase flow or should I leave it off?
Old 22 April 2014, 04:57 PM
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Ginola
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Originally Posted by ditchmyster
Cheers again Banny.

So why is everyone so keen on STi top mount and injectors, doesn't make sense if the wrx stuff will go that far.

Would the FPR increase flow or should I leave it off?

The FPR would allow you to flow a little more fuel.
The standard newage wrx injectors are 380cc rated to 420cc?, 440s was the old classic STI side feed yellow size from memory, they could flow a bit more than 440 though. Somewhere on the net there is a guide for injector size vs required power on a Subaru. The newage blue wrx ones can be de-capped and turned into 660cc injectors by someone that knows how.

Dave.
Old 22 April 2014, 05:29 PM
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ditchmyster
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Cool, so I should be able to see 330bhp ish or at least use the full potential of the hybrid td04 if I use the FPR.

modding saving and spending at the same time.
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