ksa74f

Classic model ?

micabluematt

come on someone

New_scooby_04

iTrader: (4)

Why 350? 320 is good in a classic UK turbo and simpler/cheaper.

See here

https://www.scoobynet.com/scoobynet-...xperience.html

Cost wise, to be honest, I didn't keep track, but as a guesstimate, expect not much change from 2.5-3k, assuming quality new parts and someone else doing the labour.

Being assurred of 350bhp would mean a bigger turbo e.g. TD05 16G (shuld be able to pick one up for about the price of the VF35), and a better intercooler (Sti 8 TMIC conversion) and injectors 550s that adds about another grand to the bill. You'd also be asking for it with the gearbox, and if that goes budget 2k for a 6 speed replacement that can easily handle the power, or a bit more for a 5 speed PPG conversion.

Speak to David at APi and ask about the Ns04 conversion!


This is what mine entailed if you cant be dealing with the long post linked above! Plese note, I begged, borrowed and stole my bits from various sources and not all the work was done by APi so I can't tell you how much David would ask you to supply and fit the above lot! I can tell you that he'd be an ideal person to entrust your car too though!

Haywood and Scott Sports Cat DP (wrapped)
Haywood and Scott Decat centre section
Haywood and Scott Original Scooby design backbox
Ported and wrapped OEM headers
Samco turbo kit hoses
Simota Panel filter
VF35 Turbo
Walbro 255lph fuel pump, 3 port boost solenoid
Ecutek Remap by the guru Bob Rawle!

rossyboy

iTrader: (8)

We really need a model year to assess exactly what parts are required....

New_scooby_04

iTrader: (4)

Good point, my list assumes 99/00 UK turbo!!

mike799

new scooby 04

great readup,looking forward to putting my vf35 on then remap,very similiar mods to me,my98 uk with apexi powerfc fitted

ksa74f

sorry 99/00 my

Jolly Green Monster

iTrader: (4)

as said 320ish is far easier..

TD05 16g, or VF turbo (VF34 or 35 ideally but vf28 will also do it).. Ecutek remap or Apexi Powerfc etc..

you can get a VF35 or 34 very cheap new from US at the moment less than 500 I believe..

So EcuTek route gives you 1150 total, Apexi powerFC gives you 1300 total..

the only additions would be a 3port boost solenoid, personally I try the 2port set up first when mapping and only switch to a 3port when needed..

Other options would be to add a Walbro fuel pump as they are cheap and allow a little more headroom on the fuelling and the current pump if original is now 8years old etc..

3port looking at 50 for a secondhand one.. fuel pump around 150 fitted or 85 for just the pump.

then you need to add the cost of your choice of decat if not already done and fit a panel filter.. around 600ish for example Stainless exhausts manifolds headers

Simon

Going 4 400bhp

iTrader: (2)

It's a slipery slop mate don't do it

Have a look at my scooby.

What i have is all you need and wont cost the earth

ksa74f

Cheers for that jolly green monster.

Tidgy

mines 340bhp/315ftlb with,

vf34
front mount
decat
induction kit
fuelpump
autronics ecu
uprated oil cooler
GFB dumpvalve



and away you go

injectors will be fine as they are (if you need to change them your gonna be risking the engine and gearbox), only if your heading over 350 will you need to change them.

prob worth investing in some decent gauges and possibly a nocklink as well though

New_scooby_04

iTrader: (4)

Good point! Better safe than sorry, forgot to tell him to budget for that!

Tidgy

yeah, running that high up on the standard internals etc then def worth the cost

Going 4 400bhp

iTrader: (2)

You can run 340bhp with out changing the injectors? I thought you needed at least 440 or even 550 for 340bhp?

Jolly Green Monster

iTrader: (4)

believe that is a 99 with 440s already.

Simon

Tidgy

standard for that year of car

midas303

I was under the impression that standard internals give way quite easily over 330/330 if pushed too much.

If I was doing this all over again, I would start with an sti not a uk2000 or wrx.

But if you go ahead I would suggest a fuel pressure regulator added to your list.

Tidgy

350 is about the safe limit with supporting mods like oil cooler etc

New_scooby_04

iTrader: (4)

People have gone up to 400bhp on the std internals, but I think its generally accepted that this is pushing it and not the best idea if you're concerned with longevity! Lots around running low, mid 300s with no problems at all.

Personally, after I've added the FMIC, I wn't be doing anything else power wise till I can afford and am inclined to uprate thr rods, pistons cams, turbo etc....Oh, don't get me thinking about that!!

vindaloo

I think it's a little misleading quoting BHP numbers for what's safe and what's not. But OK, it does give an indication.

What's going to break/bend the bottom end, is too much boost/too much torque.

If you quote 350BHP on a Classic STI as being the limit, you're probably looking at a torque peak of 310-330 lbft around the 4000 rpm mark.

Compare that with a typical modified UK Turbo. You're probably looking at a higher peak torque number prodced lower down in the rev range. With more comparable peak torque and BHP numbers.

J.

Aztec Performance Ltd

iTrader: (234)

When tuning to that level, one should make provisions for an engine build and/or new gearbox imho.

Prepare for the worst, hope for the best.

New_scooby_04

iTrader: (4)

Wise words. I know i've got a gearbox fund stashed away.

Both Bob and David seemed very confident that my scooby would be fine at the 320bhp mark with similar torque produced with 1.35 bar peak boost and they should know, but there are no assurances and it probably helps that my car is low mileage 35k and is VERY well looked after. Take a car with double that mileage and perhaps a few more owners under its belt to that level and it may be a different story!

NS04