Hey lads. Got my car tested today ( 2000 uk turbo ). Seems to be down a bit on what i thought id get. Torque seems ok at 260lbs but its 263bhp which i expected a bit more. Had a bit of a problem geting the cold air into the TMIC because the underlay in my scoop was covering part of it.

Maybe i should go for the FMIC and id go for the APS Induction kit, would this make a big difference, not sure what to do. Im happy with the car the pull is really good and drives alot better than it did. But with what i have should i have a little more bhp. Any ideas ?

Set up
TD05 Turbo
Full exhaust
K+N Panel filter
STI 6 TMIC
Walbro fuel pump
Tek 3 map

Thanks
Renno

 

i would say theres somfing definatly wrong with your car! i would say over 280bhp
i just had my car rr its a my99 uk turbo with just a full decat and induction kit everything else is standard, i got 273 bhp and 265lb/ft torque

 

who's rolling road was it on ...did they not give you some indication on if it was running with a problem, my car has a spec sheet nearly the same as yours but still a td04 turbo and standard i.c and its pushing 290 bhp.

expert opinions need to be seeked i think!!

 

if you are happy with the car and its running fine then why worry? dont go chasing missing bhp unless you are sure its missing. the only real use a RR has is for comparitive testing back to back of cars or mods on your own car, on the same dyno and in a short space of time.

RR's are notoriously innacurate, they all read different, a 'skilled' operator can give you false readings. the only decent dynos are engine dynos (i.e not RR) in proper temp and density controlled cells. at work we long since got rid of RR's for anything else other than noise or emmisions testing, all development and power work is done on engine dynos in cells.

 

Agree with the above.

My tuned Sti V3 gave 407 x 340 at Well Lane on a cold damp sunday.
Same car at Powerstation on a warm dry day 4 months later gave 370 x 320

Car drives exactly the same, timed, on a race track.

I believe both RR's are calibrated and fine, just different.

Graham.

 

Jesus thats some increase for little mods from a full decat you've gone from Im assuming 215bhp to 273bhp (58 Gained) wow.

I only managed 232bhp/250ib/ft > my00ppp with decat centre. Judging by what youve said maybe I should get a decat downpipe as next mod.

Nice figures btw

 

Lets see the plot.

If the torque is good but BHP low, then I assume torque is dropping off very quickly at the top end. Could well be due to the TMIC being slightly blocked as you mentioned, also how good was the fan providing air to the IC?

What was the AFR's? was it rich at the top?

What boost were you seeing through the run?

 

get a power run at ''well lane''
best modification ever , at least 20 bhp

 

westward??
i thought u were waiting til october to get it done man, thats when im booked in

 

Thanks for the replies guys. Im happy with the car just a little worried what the reason could be for it being so low. Incase there is something else wrong.

It was a place just outside Dublin Ireland. The guy was thinking that a stand alone ecu would be better, but as far as im aware the Tek3 is up to scratch
He said it was around 1.25 bar but spiked at one stage to near 1.35 bar and i should run octane booster if im doing a trackday or drag race. He dident seem to think there was a major problem with the bhp but i really think with the TD05 etc it should have been a little higher.

I dident think the fan was super but lots of cars have been tested in this place and the owner is well known and has a good setup ( westward ) I just feal there must be something else that is making it so low.

Thanks

Renno

 

gettin my v4 type r done there in october man, think theres 15 of us booked in the one day or somethin, it was probably the fan making a big difference!! powerstation in the uk have a proper fan which goes directly on top of your TMIC!we'l see how it goes in 3 weeks, il let u know how mine goes,but that fan he has can be robbing you of a good few horsies!

 

Sorry mate i thought i replied to you there. Yeah i was going down with the rest of the lads but i dont think i have the full day spare so got it done yesterday. Yeah the fan does seem small compared to pictures of Rolling road centre fans ive seen in mags. But there has been other cars down there that put up high numbers so it couldent be that bad. But all and all there is a huge difference in the car so im happy anyway.

Renno

 

yeah i hear ya, were they scoobies aswell? front mount would be handy there, well il be there in the 98 white sti type r if ur heading up for a look man

 

Yeah scoobs evo's and a cou[le skylines done well. Yeah ill prob get over to it for a while see yi there.


Renno

 

mine was mapped at 1.6bar and used to peak at 1.7/1.8bar i would check to see that you dont have any exhaust leaks as that will kill your power. plus tuning a td05 to 1.25bar isnt going to give great bhp figures as it will be even lower on the R&R

 

Hey Steve, would that show up on a dignostic check no. I reckon there has to be something up.

 

exhaust leak wouldnt show up but if its before the turbo you can loose loads of power, its happened to me a couple of times. at one point i had 5 exhaust leaks

 

low power could from the intercooler not getting enough cold air! which is very bad for power runs since your not moving anyway, check your boost pressure with a boost gauge

 

you will also find your car probably wont boost the same on the rollers as it does on the road. dont worry, just get on and drive it. your supposed 10-15bhp shortfall is absolutely nothing considering 30-40 bhp difference in dynos (see graham 911's post)

 

Follow random suggestions of boost level at your own risk!

1.4 bar should result in comfortably over 300hp, and is a sensible limit on a TMIC. 1.5bar on BOB'5 car (TMIC, TD05, decat, injectors, TEK3) resulted in 340hp at WRC Tech's Dyno Dynamics rolling road.

Paul

 

Hi Paul,

What is the difference between at TD04 running 1.4bar and a TD05 running 1.4bar,
other than the TD05 holding it for longer (assuming everything else is equal)..?

Jason

 

about 35hp is the easy answer. the Td04 will be spinning like crazy, with the wastegate firmly shut to try and force the turbo to do the work. You end up with much hotter and less dense air, and much increase exhaust back pressure leading to reduced VE and increase cylinder temperature and likelyhood of detonation.

Paul

 

Cheers