jonesymk2

iTrader: (2)

ive just been out 4 a drive in my s2 erst round sum
lanes in my area and when the revs were getting to
about 5000 - 5500 it just seemed to not want to go
any more,it was still on boost at 17psi has any body
got any idea what this could be,ive just put a different
intercooler on the car off of a saab so could this be
causing the problem

Alps Pacino

possibly i heard the saab cooler is good at cooling but restrictive on airflow

tommyt

what size is the intercooler? is it bigger than a standard erst or about the same size cos if its the same same size your really on the limit and you will need a bigger one

jonesymk2

iTrader: (2)

would the amount of pipe work ive got that i used to plum
the cooler in hav any thing to do with it

jonesymk2

iTrader: (2)

the saab intercooler ive got is about double the size of
the standard erst cooler maybe a little bigger

Alps Pacino

possibly its commen sense really that air would flow down a straight pipe easier than round 10 90 degree bends so depends how much pipe work you have used really

jonesymk2

iTrader: (2)

ive got the standard charge carrier which goes to the intercooler
on the n/s of the car and then the other pipe from the turbo
goes along the anti roll bar then up and over the alternator
then through next to the rad on the o/s of the car

ballin

iTrader: (1)

well surely if the boost gauge is reading 17psi....then its not the intercooler because the pressure sensor is after the ic.

i would say fueling?

Alps Pacino

ballin, ye but the system might be pressurised to 17psi but the air flow might be piss weak. Hence not getting enought air fast enought????????????????

jonesymk2

iTrader: (2)

what should i do then,would it be an idea to turn the boost down
and see if the problem goes away

Alps Pacino

heres a thought for you did the problem start after you fitted the intercooler

jonesymk2

iTrader: (2)

not really,the boost peaks at 18psi and holds 17 which i was
told was to much really for the standard intercooler,now with the
bigger intercooler it seems to go better up to the revs i said but
then its about the same after that as what the standard cooler was

Alps Pacino

might be fueling then when was the last time you had it set up might need a tune

jonesymk2

iTrader: (2)

havnt had it set up atall yet,was going to get that done in the
next few weeks at scc performance,theres no rolling roads
near me that i can go to or want to go to

Anonymous

mine does exactly the same.

jonesymk2

iTrader: (2)

does it still do it now,mine pulls really well up to those revs
then its like it hits a really steep hill

Anonymous

well i got pace intercooler and shes running at 14psi. she dont seem to run out of puff though just dont seem to go above that

big_wig_074

thatll be the shonky hole in the top!!!!

jonesymk2

iTrader: (2)

mine will go above that but not very easily,up to 5500 revs it
pulls really well i think anyway then it just takes ages to go over that

Anonymous

pmsl na that was b4 that

jonesymk2

iTrader: (2)

i will try turning the boost down to see if that makes any difference
if not i will re-route the pipes to see if that helps

james_birch

rev limiter?!

Was hitting 5.5k in mine and sounded like i was on the rev limit! like a bouncing! only thing is i dont see how high it revs when in lower gears! ...im goin for a drive!

essexrsturbo

did you say in another thread that u had a saab turbo?

james_birch

right took mine out! and it didnt hit the limiter till 5800rpm!!

So make sure it aint just above the 5.5k!

hope that helps!

jonesymk2

iTrader: (2)

yes i did mention in another thread that im using a saab turbo
it bolted straight on but the exhaust housing and turbine inlet
inside diameter r slightly larger

jonesymk2

iTrader: (2)

ive had it up 2 about 6500 rpm and it hadnt hit the limiter

jonesymk2

iTrader: (2)

turned the boost down a bit to 15psi and it seems to be a bit better
will hav to put a bit of petrol in the car and take it for a better run to
just make sure

wayneclayden

Isn't the SAAB turbo a LPT.?.(low pressure turbo) If so maybe you have exceeded it's limits???

AndyRST

souds like wrongly spec turbo for the engine. Can a Saab turbo be pushed as far boost wise as a std RST garett T3 ?

jonesymk2

iTrader: (2)

it seems ok up to those revs on full boost,i think it might
hav come off an old 900 or 9000