right guys ive been looking about on this forum looking at different things, i was looking at the dyno readings that have been put up. i have a standard impreza wrx on a 93 plate, put it on the dynameter n got bk 246.2bhp at 6000rpm and 227ft.lb. of torque. do this sound pretty standard for an impreza? oh and its an import.

interested to hear peoples views

cheers fuzzy

 

Sounds a touch high to me

http://www.sidc.co.uk/faq.htm

 

probably about right....

 

sounds about right for an import with an induction kit and aftermarket centre and back box...if they are fitted

 

nothing fitted, standard airbox and exhaust

 

sounds a bit much in that case, I have a UK car tho so best wait for a JDM owner to post...

 

i thot it was a bit high, its been running about 15psi boost aswell

 

I think that in theory it should be approx 240 bhp if you had 100 RON fuel in it, or so i am led to believe!!!

 

i always use super unleaded in it

 

ok guys, talking about the bhp, i just had my turbo changed last week, after changing it, there was a drop in power, old turbo about 16psi, this turbo about 12 psi. just went and had a look at the turbo that came off the car and its a td05, other turbo put in was a td04, si im guessing its the td05 must be a bigger turbo, or wot is the difference btween a td04 n td05?


cheers guys

 

A TD05 will produce more power, the TD04 is good for 280bhp max.
The one advantage of the TD04 is the very quick spool up time.

People normally change the TD04 for a TD05, not the other way round !!

Rob

 

i didnt know it was a td05 until after i had changed it, only reason i changed it cos the guy at the local performance garage said there was something wrong with it, im gonna get the td05 reconditioned, or probably get a hybrid turbo for it

 

I did'nt mean to sound as though i was taking the pi** bud.

I was just explaining that a TD05 would replace a TDO4.

Good idea though to re-con the TD05 , you could then sell it along
with the TD04 to fund a real decent upgrade.

Rob

 

i know u werent mate, i was just saying i didnt know it was a td05 until i took it off, if i knew it was a td05, id probably of bought another td05 instead of the 04

 

Did you buy the new turbo new and if so, what did it cost (if you don't mind me asking)?

 

no mate, 2nd hand n cost me £100

 

As regards the bhp, this might help
http://www.mudd90.freeserve.co.uk/technicalstuff5.htm

 

ok mate, well goin by that chart, the bhp is about right. so why have i got a drop in power with a td04???

 

I was loosing power a while ago, turned out to be a leak in a boost pipe.

 

cool mate, il check the pipes, but its only been since i had the turbo changed

 

Id say that 240+ bhp is high for a standard 1993 WRX. As manufactured, this car made 237 bhp when running on higher octane fuel than we have in the UK (99RON btw, 100+RON fuel wasnt available in Japan then...). Bear in mind that 'at the flywheel' figures are subjective, as the power can only be measured at the driven wheels: corrected 'flywheel' figures are really only an educated guess.


Simon

 

hi mate, i think its cos it was a td05 turbo in it as i found out about 2 hours ago, n not the standard td04

cheers fuzzy

 

Whether your car is uk or import if it is 1994 model then it should have a td05 - this is the standard from the factory. With your old turbo i suspect someone has tweeked the boost up a bit (should run about 11.5 standard if its a jap wrx). via a mbc or perhaps a new ecu/chip. This would explain the slighty higher power figure you got.
94 wrx should run about 230 - 240 on uk fuel standard
94 uk car can run 208 - 225 on uk fuel standard
Now - if you have just fitted a td04, 90 degree entry turbo then you have taken a step backwards from standard! That turbo will run like a bag of **** with the ecu map you have in the car. This will expalin the now poor performance and low top end grunt.
I suggest you take it easy for now and get a td05 back in there asap.

Andy

 

hi andy, with the td05 in it was running about 15psi boost, now down to about 12psi with td04. there no mbc in the car, not sure if its been remapped.
its a 1993 jap import. where the best place to get it reconditioned, if u know, im in scotland btw

cheers for the advice

fuzzy

 

If the td05 was holding 15 psi then it had defo been "chipped". That is not stock boost.
The td04 will not hold as much boost becase it is smaller. Not as good IMO.

Really not sure where you can get the td05 recon. I brought a second hand td05 for £175 in great condition.
TBH £100+ fitting for a td04 90 degree is expensive. Those turbos were fitted to the jap import 1992 -1996 wagons - they had a different ecu map to suit -hense you need to get that td05 back in quick!

You do have a saloon dont you?????!!!!!

 

yeah, its a saloon. now uv got me worried about this now. how do i know if the td05 is fcuked, doesnt seem to b any play in turbine wheels, but the guy at the garage said it was losing boost when hot, something to do with the wastegate valve or something

 

not sure what he ment mate. loosing boost when hot? was the car smoking? what made you change the turbo? whas the car not peforming in some way? or was it just cos the guy told you to!

Andy

 

i not sure wot he ment by not holding boost either, but when i was driving the car, n pushed it just over 100mph is felt as if the car was holding back, not get the acceleration out of it, the car never done it when i first bought it, i had it crusing at 135mph no problem, then i put it on the rolling road, n that swhen the guy told me about losing the boost pressure n it was the wastegate valve problem, n thats why i changed the turbo, but no it wasnt smoking or anything, just losing performance over 100mph