parky1984

just asking i have standard escort s2 with k&n full stainless and dump valve standard ecu and standard actuator if i tun boost up whats the highest being safe ,i dont wanna blow it up

notSteveS2

it wont run anymore than 10psi i think on standard chip...

so 10 is highest u can run...

but if u do this make sure u get the car set up well so it dont go bang!

Ad4m RST

Yup ecu will cut fuel at 10psi unchipped and it will 'overboost'.

Definitely get it to a good tuners before touching boost

parky1984

motorsport develepments set it up but they did tell me my actuator wasnt holding boost it was running 7psi so when i put another actuator on which holds the boost will it feel quicker the car

Ad4m RST

Will feel marginally quicker but at 7psi held you won't notice much difference tbh

notSteveS2

wot u will probably find is that it will pull constant where the boost is holing still rather than droppin and liftin then droppin as a fucked actuator can do...

will also b faster if u run more boost... ie 10psi...

but id still get the set up checked out on CO machine and timing etc after u chnge it.

MFi cars set up change alot matey... i used to take mine to Jano every couple of weeks to chuck it on CO... quite often settin had changed...

cant be helped really....

ud prbably wanna run round 3- 3.5 on the CO... also get better intercooler...

welll worth doin!

parky1984

cheers pal so if its turned up to 10 psi is that safe i dont put my foot down in my car really its just nice to have abit of power under your feet when u need it pal ,when i took it msd it was running 70 bhp it was shit slow and used loads of fuel he told me i needed to change actuator cos it wasnt holding boost and when actuator is changed i should get about 150 bhp 160 maybe what u think

notSteveS2

i cudnt judge wot power ud make mate but that sortof power is easily achieved with a rst...

i cant give ya a garuntee mate but im runnin 18psi on standard bottom end with no prbs for ages now and it takes alot of stick(but i have efi so not really fair comparison)

but my point bein bottom end shud b able to handle it aslong as in gd nick... and ecu shud handle 10psi so i cant see a reason y it shudnt b ok!

parky1984

engines mint just changed oil again today and filter changed every 3-5k miles

notSteveS2

Dave_RS

I have a 90´spec, and i can´t run at more than 6.5 psi continuously, if I go for more boost, the pressure lowers single in a pair of seconds...

And it cuts injection to 18.8PSI.

It works with the standard ECU... How I can obtain more continuous pressure? Chipped ECU?

Thnx!!!

notSteveS2

sorry mate i dont quite understand all ur sayin... sorry...

but basically u csant run more than 6.5psi???

thats wierd as standard ERST ran 7 it think!




try borrowin a friends ecu... that isnt chipped and take for a spin... may need set up first tho

Dave_RS

Yeah, i can´t run at more than 6.5psi.

If i turn up the boost, the car reaches without problems about 14-15psi, but only for a seconds, cause the boost go down again to 6.5

Oh, and my ECU isn´t chipped!! Is standard!!

notSteveS2

then id refer to 'boost droppin' thread in here matey!

as for standard ecu if it is standard at bout 11 or 12 psi it will make a loud bck fire as ecu shuts car off temporarily at that boost on standard chip..

Dave_RS

Mine make the backfire and stops engine temporaly at 18.8 psi, not at 11/12

Thanks dude, i will see that thread

notSteveS2

mayb it has sum kind of boost chip.....

obviously not an unlimited boost chip tho!

Dave_RS

Imposible have any tipe of chip, the car have buyed new from my grandfather, and now it´s mine

notSteveS2

strange mate...

any1 else help here~?

Ad4m RST

well if its unchipped then it won't hold more than 6-7psi anyway so no real suprise there.

Its peaking pretty high though at 14-15 does it misfire or pop & bang when it does this? the ECU should of cut boost by then.

addiction

overboost protection should cut in at 10.5 psi on a standard ecu

notSteveS2

as above....


think he may have boost leak

Dave_RS

No dude, dont misfire or pop, just push a lot... but only for a seconds, cause the preassure goes down slowly, but goes down

parky1984

i changed my actuator today another standard one its not chipped up and its boosting 10 psi with no flat spots running good first time on and no need to ajust i am a leg-end

addiction

was it running 10 psi before you changed the actuator? if not you better get the fuelling checked

parky1984

why get the fuelin checked

addiction

because you can't increase the boost without checking the fuelling, it may run lean and melt your engine!!! standard they are 7 psi so increasing the boost to 10 psi may mean you need extra fuel!!

or you could just leave it and wait for it to go bang

parky1984

i havent changed the boost
i have just changed the actuator stu at msd said dont no change it so i havent

ivorbiggun

All these people playing around playing with their own boost levels only means one thing/lots of engines going POP very soon.

addiction

so it was running 10 psi before you changed the actuator then? i take you uesd a pressure tester to pre load the actuator then?

parky1984

no pal i just got told to replace actuator so i have and it runs well before it was boosting to bout 10 but it wasnt holdin it it was droppin and shit

Ad4m RST

So does it hold 10psi now or peak at 10 and hold 7-8?

if its holding 10psi then i'd get fuelling checked as addiction says to be on safe side

jezRS

my god this topic is givin me a headache, jus go and gget it set up

parky1984

it peaks 10 i think and holds 7
and its bin set up

kiddie

Ok well done

notSteveS2

i dont think it shud drop like that at that low boost mate... shud hit and hold 10psi really...


u got boost leak sumwhere or sumthiun!


IMO... cud b wrong

parky1984

i dont understand u lot
i said my car hits 10 psi and i get told its not right its boostin to high and could blow my engine and when i say it boosts lower u still say theirs somethin wrong ,its runs fine and boosts good thats good enough for me

kiddie

Get it chipped u gay, its a waisted RS running such low boost

parky1984

i have a chip for it but am not fittin it yet doing all the bodywork on it first then get a uprated actuator got other things i need to spend my cash on

notSteveS2

parky wot we r sayin is... if the car hits 10psi it shudnt drop after...


also on standard ecu it shud never make it to anythin above 10psi... it shud cut out!


sweet and simple...

petermintrst

and if everyone did that there would be no standard ones left.