Gills

Hi all,

in the middle of a build which I am putting car to near standard and was wondering I have some 740cc injectors to fit but everything else is going to be standard on the car pretty much and then it will be mapped.

do I need a fpr or fuel pump as max bhp is going to be 330 surely ?

would I also get away with standard 380cc injectors?

it’s a v1 sti by the way

edsel

iTrader: (2)

380cc won't be big enough to get over 300 bhp, 440cc will be maxed out at 330 ish. Aftermarket fuel pump like a walbro and an adjustable fpr will be needed and will help the mapper. The standard V1 intercooler will run out of puff around 300.

Vxr2010

so if the ic runs out of puff at 300 , can the original injectors be used as they are , plus an updated fuel pump , and accept less bhp ?? , otherwise it’s lots more work for little or no benefit ? and it would save a lot of money , is a replacement used ic the way to go ? is it an sti with a better gearbox or wrx as that’s a limiting factor too based on the gearbox strength ,from memory the classic sti were around 260 to 280 bhp

Gills

its a v1 sti that was taken from production in the early 6 months, limited run, I have the sti tmic and the gearbox is a ty752.

started as 250bhp but will be happy with 300 and if I can get there with the standard injectors and fpr then I will be happy to do that and keep it as original as possible with a bit extra punch over standard.

Vxr2010

if it was me , i would keep it pretty original , do the pump and see how you get on from there , if you manage another 30 to 50 bhp that’s a healthy leap in power , plus save quite a bit of time and £

Gills

to be honest that’s what I was thinking aswell, would I definitely need the pump as-well then?

looks like il be putting the 740cc side feed injectors on eBay tonight then.

1509joe

iTrader: (2)

I think I have a set of 440cc ph1.5 injectors here and a 3 month old 340 lph fuel pump that was fitted before I upgraded two cars. If any use to you PM me and i'll go and check in about six different places for the injectors but I know where the fuel pump is

Gills

hi mate,

I think I’m going to go with the standard setup, not sure on fuel pump yet going to wait and see what people think is best not sure what it’s limits are tbh ?

thanks anyway though

MattyB1983

iTrader: (51)

Standard fuel pump is man enough but why wouldn't you change it... it's a very important part and your current one is now ancient. A nice new walbro can be had for 70ish quid, it's a no brainer.

Sell your big injectors and buy the 440's above, fit then and forget about FPR's. Car will make a shade over 300bhp and be great fun.

Gills

yeah I thought it may be worthwhile with the pump at least, was going to replace with standard but may as well upgrade it, will the 440’s allow for much more then or like an extra 20bhp tolerance for example?

Vxr2010

maybe worth just doing pump and see how it goes , was it re mapped before or is this the first time , a good map and a fuel pump is a great mod in itself

Gills

no never been mapped as far as I know I haven’t even driven the car yet as I purchased with blown block.

it has a u8 ecu which I believe can not be mapped so I have a power fc to install instead.

1509joe

iTrader: (2)

You'd be far better with this than an Apexi.

http://www.enduringsolutions.com/sho...553/category=0

Gills

what would be the advantages of this over the apexi?

1509joe

iTrader: (2)

Below the picture explains all plus far newer technology.

ossett2k2

iTrader: (9)

No need for aftermarket fpr.
ESL is a good upgrade