350bhp on stock turbos?

[gazmk2]

Had a bit of a search and I know about the thread asking about what mods needed for 350-400bhp but nothing in there tells me if I can reach 350 ish (340 would do!) is possible on standard turbos?

I know there are other factors like the general health of the engine/turbos and supporting mods but just for arguments sake lets say both engine and turbos are all well and in the case of my car there is a lager aftermarket FMIC, a full turbo's back decate exhaust system and a good old Ken & Nigel panel filter.

She dyno'd at very close to 300 horses (298 with Ben's fudge factor, 215 at the wheels) and I really would love to get to somehwere close to 350bhp next year!

What do we recon?


Cheers

Gary

[Kenneth]

People in New Zealand and Australia are getting 340-350hp (using 24% drivetrain loss so 250-270hp at the wheels) fairly easily with those mods and ECU tuning.

[vr4cobra]

I'm running about 263awhp/196.3awkw on a boiling 34deg C day outside the dyno cell so should be bout wat Ken said to the fly. I'm running stock turbos, full exhaust, hard ic pipes, fmic, fuel rail loop, vk22 spark plugs, walbro 255 pump and tuned to 19psi if that helps

[gazmk2]

Sweet! cheers for responses chaps. I take it a hard pipe kit would be a wise move then? this is obviously going to be abcked up with improved braking etc. I am just really gutted I couldn't follow through with the radiator group buy as an alloy rad would have been good.

[Nick Mann]

There are a lot of people in the UK running similar mods but with less power. Traditionally power figures in the UK are lower for similar mods. I can only think of three cars that have hit 350 or more on stock tubs and they were all very well tuned.

[gazmk2]

So long as its somewhere near that would be great! No particular reason for doing this to be honest, I just want to! LOL I don't even know if I will actually do it as I do have another expensive hobby that's fighting for my hard earned!

[WOODY72]

So long as its somewhere near that would be great! No particular reason for doing this to be honest, I just want to! LOL I don't even know if I will actually do it as I do have another expensive hobby that's fighting for my hard earned!

Women?

[Davezj]

Had a bit of a search and I know about the thread asking about what mods needed for 350-400bhp but nothing in there tells me if I can reach 350 ish (340 would do!) is possible on standard turbos?

I know there are other factors like the general health of the engine/turbos and supporting mods but just for arguments sake lets say both engine and turbos are all well and in the case of my car there is a lager aftermarket FMIC, a full turbo's back decate exhaust system and a good old Ken & Nigel panel filter.

She dyno'd at very close to 300 horses (298 with Ben's fudge factor, 215 at the wheels) and I really would love to get to somehwere close to 350bhp next year!

What do we recon?


Cheers

Gary

Is you vr4 a manual or auto.

What you have to remember is here in the UK dyno dynamics rolling road has an atmospheric compensation on it so the hp figure you get has been compensated to about 20 deg C even if you test your car on a cold winter day. So you do not have to worry about the type of day it was tested on, as long as the dyno is setup correctly it will give you a hp figure that you would get on a normal 20deg C day. This is all within the drivetrain compensation as well.

I would have said 215 is about the right for a ball park figure, you should be able to get more out of the car with an ecu tune.
But that is just my opinion.

[gazmk2]

Women?

Dunno if I would call being married a hobby! Expensive definately!! LOL

I also fly radio controlled helicopters, flown planes for years but helicpopters have fought my interest big time lately!

[gazmk2]

Car is an auto Dave. It's running 14 psi now so not sure what extra I now have as it was running 12 psi when I had it dynod. I know it's as quick as a standard mk2 focus RS, quicker than a mate's 305bhp 350z and quicker than an e46 m3!

[CANDEE]

I have 185kw atw/248hp atw with just a panel filter, exhaust and fmic with 11psi. But that is with a car with 70k kms/43k miles on it..

[Nick Mann]

That's coming back to a nz uk difference again. We never see those numbers with those mods in the UK. I don't remember ever seeing more than 230 at the wheels in the UK without exhaust, intercooler, boost, fuelling and tuning. And I have seen a LOT of vr4s on the dyno.

[Adam.Findlay]

I made 214 kW ATW / 287 hp ATW with
600x300x76 FMIC,
walboro intank pump,\
K&N pannel filter,
3" cat back exhaust
262/9.8 cam regrind & valve springs
and a pretty basic ecu reflash I did myself. with the 24 percent loss kenneth said above is 350ish at the engine

[CANDEE]

Nick, mine was 164kw atw bone stock(11psi) and some really thick oil in it... Its sister car had 153kw with an hks panel filter and ralliart backbox(10psi stock) on the same day, but had about 40,000km's more on the clock.

[lateshow]

We got 354 bhp from the engine using ethanol fuel + all the basic mods.

[Davezj]

Car is an auto Dave. It's running 14 psi now so not sure what extra I now have as it was running 12 psi when I had it dynod. I know it's as quick as a standard mk2 focus RS, quicker than a mate's 305bhp 350z and quicker than an e46 m3!

I think it will take new camshafts and a good long proper dyno ecu tune to get more out of your car.
The outside OZ and NZ power figures are always much higher than the uk figures for some reason, with the same mods. It is very odd but unexplained.

[gazmk2]

Like I said 350 ish would be the aim but I do understand the variables involved. Mine would most definately require a fresh set of turbos as the rear one has been a little smokey on lift off since I bought it in May 2012.

I also think a top end rebuild might be in order as the lifter tick can be quite bad on my car these days!

[Gowf]

The most I have seen on stock turbos with stock internals was 340 I think.... BUT this was a very low milage engine, and when it came back a couple of years later, it had lost a good 25-30bhp. It had a really nice exhaust and downpipes (hayward and scott), panel filters, maf removed, intercooler, and ecu.

The turbos are just pants above 1bar, but then if you can cool the charge sufficiently (meth) then you should be able to do it.

[swinks]

The most I have seen on stock turbos with stock internals was 340 I think.... BUT this was a very low milage engine, and when it came back a couple of years later, it had lost a good 25-30bhp. It had a really nice exhaust and downpipes (hayward and scott), panel filters, maf removed, intercooler, and ecu.

Gareth, mine was 340 mark at flywheel on stock cams on 91k miles engine. Then she did 338 on 5 cylinders with 262 cams, and then I got fed up with powah chase in vr4
Seconded with boost levels tho. Anything more than 1.1 bar will give you nothing.

[Davezj]

What was you vr4 doing when you had the 262 cams, 6 cylinders and the meth injection.
Or was it bum dyno compared to what you had before.

I am thinking of going down the cam route. Was it about £600 for the cam regrind and springs.