Originally Posted by musso2010 (Post 9958023)

If you fit larger injectors, they you will need a remap. Depending on the year of your car, pre 97 cars cant be remapped, they need either a new ecu, an ESL or a chip.

What mods has your car got?

As for oil, Catrol Syntrax is what i have in mine, its very good stuff.

Originally Posted by musso2010 (Post 9958058)

www.opieoils.co.uk is the place for oils etc...

I would remove the prova ecu personally, they are mapped to run on 100-102 ron fuel. If you decide to keep it, before you do anything else i would buy a Knocklink, to check if its detting.

Have just checked your garage, nice motor!

Originally Posted by musso2010 (Post 9958069)

Ditch the ECU, and get an ESL live map. And i always thought the Prova Ecu's ran 16psi??? Maybe someone with more knowledge can advise you on that...

Originally Posted by musso2010 (Post 9958080)

Hmm, I am running 380cc injectors at 17psi with no problems.
Have you got a boost controller fitted anywhere? If it was me, i would remove the ECU, and the front mount, and fit a std ecu. At least then you know the car will be safer. Save up the cash, and have an ESL fitted, then the car will be mapped for UK fuel, your front mount etc...

Originally Posted by musso2010 (Post 9958087)

Hmm, Remove the boost controller, and refit everything back to the standard boost control solenoid. You will then probably make the 16psi your looking for.... How long have you had the car? I would be suspicious as to why the boost has been turned down... It wont be due to the fueling, as the ECU is set to run 16psi on them injectors.

Originally Posted by musso2010 (Post 9958114)

You should have a TD05. 11psi isnt 1.1bar, so he is feeding you rubbish.

I would remove the manual boost controller, and go back to the factory boost controller. I suspect that the boost has been turned down due to an issue you are not aware of yet... I say this because my mate was in a similer situation, the boost was turned down, and on increasing boost to the factory level he discovered his clutch was slipping.

If you need help removing the manual BC, let me know!

Originally Posted by chaffe (Post 9958213)

Approx 15 psi in one bar, 11 psi is .7 bar, around 200 bhp i would think

Originally Posted by L.J.F (Post 9958467)

get it booked in with a specialist mate.

Originally Posted by KieranWRX (Post 9958263)

thats what i mean and its running 298.2 bhp

Originally Posted by KieranWRX (Post 9957983)

hi guys, basically my scooby classic is running 298 bhp apparently on standard injectors, how do i find out if they are standard? im wanting to turn psi up, but will require bigger injectors if they are standard, which do i go for? and this would require remapp

what gearbox/diff oil is it i need? i have a slight leak coming from the front so want to keep it topped up until i find the problem, thanks :thumb:

Originally Posted by chaffe (Post 9959637)

dont think it will be any where near 300 bhp @ only 11 psi, a std wrx makes 225 @13.5 psi, you would need 18-20 psi for that bhp, IMO.

Originally Posted by harvey (Post 9959681)

If you look at the injectors and they are a grey colour they are 380cc and capable of around 280 bhp or a little more on standard fuel pressure. If they are yellow they are 440cc and these will top out somewhere before 320 bhp. After that you need 550cc injectors which will get you almost to 400 bhp on standard fuel pressure. You have a Classic so you need side feed injectors.
Increasing the fuel pressure will extend the range of the injectors but only by a relatively small percentage eg. 25% increase in fuel pressure (which is probably not a good idea) will result in 5% power increase ability.
You cannot go changing injectors or increasing fuel pressure without remapping the car if you want it to run properly.

Originally Posted by KieranWRX (Post 9960086)

i have the rolling road to proove it mate, and the car is very quick i do belive it is running around the 298 bhp figure as shown just not sure how the hell it is on that psi, car needs booking in and need to find out exactly whats been done to it




okay i will check and find out what injectors it has, but ideally i want to take the car to a specialist or someone near me who is clued up on these to know what the hells been done to it because at the minute im highly confused on this bloody car and whats actually been done to it, maybe it has had more done then i know and previous owner knew,

the car is very quick so im guessing it does hit the 300bhp mark, what top speed are you talking from say 250bhp and then 300bhp

thanks for the help guys

Originally Posted by chaffe (Post 9960116)

i suspect the gauge is badly misreading, because as mentioned previously it is just not posible to make that power at that boost. Do you have a picture of the boost gauge?

Originally Posted by musso2010 (Post 9960273)

The RR figures were taken 2 years ago... So something has gone wrong between now and then. Imo, that figure of 298bhp means nothing as you are noway near running the correct amount of boost to make that kind of power. I am not saying it DIDNT make it, obviously it did, BUT something has gone wrong between now and then.

You need to get rid of the manual boost controller knob thing you have under the bonnet, and plumb everything back to the factory boost control solenoid. That would be a logical start. You should be running 16psi on that ecu, your only making 11psi most likely because your manual boost controller is turned down.

Originally Posted by chaffe (Post 9960281)

same gauge as mine, ah na! looks like it is sitting at -2psi to start with. mine goes to last line before 20 psi ;-)

Originally Posted by musso2010 (Post 9960344)

I cant answer what your top speed will be at certain bhp figures. Top speed is also down to gearing and torque. Not just bhp.

I am starting to loose track as to what your question actually is?

Originally Posted by KieranWRX (Post 9960335)

what top speed would be looking at then?

Originally Posted by Jamz_ (Post 9960354)

70mph ;)

I cant see why the car cannot make your figures with your mods, as mine has made 310 with similar mods (standard ECU with chip)