davidgoodwin1803

hi guys.

i picked up my car today and drove it for the first time, it is great and pulls like a dream but there are a couple of niggles.

1. at low revs driving, say in 2nd gear at 15mph it is very lumpy but as soon as i put my foot down it seems to clear, it does this at low revs in all gears when my foot is just resting on the accelartor. i think it is ony doing it when it get warm. any ideas ?

2. i have the biggest of exhausts 5" tail pipe but it sounds nothing like a scooby, it sounds more like an evo, i cant stand it, what would i need to change to get that noise back in my life.

please help David

woody1980

what intercooler and turbo has the car got, i get quite a bit of turbo lag at low revs since i fitted my front mount intercooler. all turbo cars have some lag so runing at really low revs will sometimes be a bit lumpy. not sure how your getting an evo sound the boxer engine in the scoob is pretty destinctive.

scoobian

have the headers been changed to equal length jobbies???
..that would explain the noise

davidgoodwin1803

it has the standard 1994 sti turbo an dintercooler.

its not lag, its to lumpy for that but it is only when i am coasting with my foot on the peddel, as soon as the turbo spools it stops doing it.

a couple of years ago i had a crazy wrx and that sounded amazing but this car sounds so tame it doesnt sound like the boxer engine, only on tick over but as soon as you boot it it just sounds like an evo or something like that.

davidgoodwin1803

sorry do you mean the manifold side of things, if so the manifold is not normal looking it seems to slant away

scoobian

yeah, its the manifolds/headers that give the engine its burble (unequal length d/s to n/s as standard )

woody1980

maybe its just the size of the exhaust, the bafflers create alot of the burbble from the exhaust so if you have a straight through with no bafflers it could change the noise. not sure what they sound like if you change the manifold and all the way through. only people i know have just fitted larger exhausts of the same type.

davidgoodwin1803

i will try and post some pics of the manifold i have tomorrow.

Although its my birthday

woody1980

happy birthday for tomoz. are these pics gonna be you lieing drunk under your car struggling to focus. maybe a half eaten kebab and can of stella in the shot aswell.

davidgoodwin1803

lol possibly

myblackwrx

iTrader: (1)

Since i'm just down the road from you give us a shout if you want any help.

happy birthday

davidgoodwin1803

thanks mate you might be getting a shout shortly, thanks again

davidgoodwin1803

here is the exhaust sound that i am getting and a look at the manifold.

YouTube - My sti exhaust


YouTube - my sti engine bay

Thanks David

davidgoodwin1803

the manifold.

YouTube - my sti manifold

myblackwrx

iTrader: (1)

Dump valve is in a funny place (looks like my old Blitz one).

Change the exhaust possibly for a smaller system perhaps?

yiour manifold looks quite different to mine on my 93wrx (although i can't see much of it tbh).

davidgoodwin1803

do you think that because there is such a long pipe going to the dump valve that it coild be leeking boost befroe it builds up.

and about the exhaust, my wrx that i had before had a bigger exhaust than this one and it had that fantastic flat 4 sound,

there are 3 boxes in the exhaust could this be the problem

YouTube - my sti exhaust boxes

davidgoodwin1803

ok guys it seems to have got worse, tonight i started the car and started to drive and all it wanted to do at low revs was kangaroo, splutter and fart as soon as i put my foot down it would clear and when it got warmer it got a bit better.


it is beggining to pi.. me off now, it is impossible to drive at low revs for a good 15 min without jumping and spluttering.

has nay body had this before

Thanks David

myblackwrx

iTrader: (1)

plugs,coilpacks,maf possible culprits.

jayallen

iTrader: (31)

You have aftermarket headers on the car and probably equal length hence no burble.

woody1980

my wrx 93 import has just started doing exactly this. was being a bit annoying when cold and i hadnt changed the oil for around 7 8 months so thought this might be the problem.

changed oil and coolant the other day and its made my problem 10 times worse. i went from 0-40w to 10-60w and changed oil filter. now when i start the car from cold its idling ok at first but if i try to drive it will kangaroo everywhere and is impossible to drive.
anything over 3000rpm it will go ok (but dont want to when cold) and when warmed up it drives normally. wasnt nearly as bad until i changed the oil and coolant though.

dont think your have a problem with anything modified i think you may have same problem as me as in your vid it sounds similar to my car. been talking to a few other peolple and they think might be something a bit more serious like head gasket going. fingers crossed its no though.

longy82

hi there i have got a 97 2000 uk standerd it splutters and jerks when u drive it without bringin the turbo in but once u bring the turbo in it flys it runs perfect i have put a new set ov plugs in tryed another coil and aslo tryed a boost selanoid erm airflow senser ht leads but still doin the same has anyone got any idear wot it is cos its really doin my head in now it does it from cold and warm but it doenst stall and it ticks over nice it just does it when u set of at low revs in any gear???????? please help