renno rannes

Looking for a few opinions on this. Im running a TD05 16g at the moment with Tek 3 map etc etc on a my00 uk and was wondering would it be a better set up to have a Hybrid TD04 if the aim was 290 bhp. Would the TD04 kick in quicker or earlier and be a better turbo up to 300bhp than my TD05.

Cheers for any help

Renno

john banks

Yes and yes.

Roojai

Not to contradict JB but I always thought that the TD05-16g was a better option for anything above 270, as it provides cooler boost and mo re flow at the top end of the range, rather than that TDi feel. I ran a TD04 for for a while, it was not a hybrid and I do not know how much difference that makes (that may be the whole point), but I like the feeling of an engine that is pulling harder towards the red line rather than beginning to drop off once past 5000rpm. Perhaps it was too many years with a vtec / vvti setup

john banks

I also prefer the TD05, but to get the biggest power band you want to use the smallest turbo possible to produce the power you require. Have a look at some of the Project WRX/Andy F Performance info in an old Scooby Magazine for further info. As roojai points out, the intercooling requirements for a given power level will be less on the TD05 though and the TD05 will make it more easily.

Johnny50

I`m in a similar situation myself.

Toying between the 16g, and the Hybrid 04.

Although i`m not aiming for a specific number, i`m more looking to do mine as a simple stage 1 type upgrade.

My senses tell me to for the hybrid 04, as the low-down, and mid-range grunt is what i prefer, rather than power all the way to the redline.

Other mods on mine so far, are full decat, and STi8 tmic, walbro.

New_scooby_04

iTrader: (4)

Would I be right in saying that one factor here could be the longevity of the std tranmission? I've heard that a TD05-16G is quite capable of breaking a std UK box....not sure if this would be so much of an issue with the power and toque aspirations of the poster.

NS04

Johnny50

I beleive the 16g can quite easy kill a UK box without too much hassle.

renno rannes

Thanks guys, What about if i got the TD05 Converted into a Hybrid. I think that has the high flow compressor wheel would that spool up earlier. Or would an Apexi avc-r be able run with my Tek 3 to allow boost come in alot earlier.

Renno

easyrider

This is somthing ive been thinking about doing.
What is the difference in real world feel of the hybrid TD04 compared to the std 04?

john banks

Spools up similarly, maybe adds 10% power.

M1BJR

I thought the whole idea of a hybrid 04 was to improve the missing top end power when used in this application. Does it not have a slightly larger compressor wheel or something?

Some great free tech info here guys:-
http://andyforrestperformance.co.uk/16307.html

Hi Roojai, almost a neighbour?

Steve.

easyrider

Thanks-Does it add the power at the top end by holding boost a little longer or is it better throughout the revrange?Does it make a noticable gain?

Thanks.

Gary.

jasonius

iTrader: (1)

I'm running ~280/270 on std. TD04 (@1.4bar peak holding to 1.1 to 6k) with and STI 8 TMIC/scoop & splitter, usual supporting mods and ecutek.

Spool up is rediculously fast and IMHO on the road performance is a match for many 'bigger' powered scoobs. Something Andy F pointed out in his 'Project WRX' as JB has already said..

The shape of the torque/power curve is what's important.

http://i14.photobucket.com/albums/a3...-051Medium.jpg

renno rannes

Thanks lads geting some good info here.

Renno

john banks

Gary, it can hold boost longer at the top and/or make more use of that boost because of higher efficiency. It is a subtle change but along with other things worth doing. I had something similar four years ago and it hit similar power and power band to another car (with a TD04) which had a better exhaust, induction and tubular manifold.

easyrider

Thanks John.

jaytc2003

iTrader: (1)

what about fitting some of harveys ported headers, and leaving the td05 as it is. I have read on here many times that it allows the boost to come in a few hundred rpm earlier which seems to be what your looking for.

New_scooby_04

iTrader: (4)

LOL I like the comment at the top of that:

"Boost quite high for a WRX (1.5bar)"

No Sh*t sherlock!

renno rannes

Would they really make that much difference. That could be an idea. Do you loose flat 4 sound with these.

Renno

rigga

iTrader: (4)

no as they are still the standard unequal length versions..... equal length manifolds loose the burble

renno rannes

Cheers

magic40

had a td05 runing on a uk box thats done 118000 miles now for 1 year, same STANDARD clutch, 2 rolling roads each within 2% of each other at 323 bhp atfw,

but to be honest im putting the car back to standard before I push my luck to far...

Trap2Terrorist

iTrader: (3)

I'm running 282/282 on a standard TD04.

Granby

iTrader: (5)

Yes they do make a difference, they made my VF34 spool up about 500rpm sooner and you keep the flat 4 sound

chrisl25lnf

running 286 on standard tdo4.

moto

To give you some idea of the difference, I'm running similar mods to above with a TD04 hybrid and tubular headers and getting 306/293.

lockytaylor

Hi just had one of Andy's TD04's fitted to my MY03 with similar mods to everyone else and had it remapped yesterday - 337HP with 313 LBS/FT.

Really smooth and a strong curve so I am well impressed by the Hybrid. With Harvey's pipes (also had fitted) the spool up is even quicker than standard. Getting full boost at about 2900RPM.

jasonius

iTrader: (1)

Great result mate..

IMHO that low down response is a key aspect of a really effective fast road car..!

Not that I'm doudting your figures, but where did you get it dyno'd..?

jasonius

iTrader: (1)

BTW I'm only getting a bit more than that from my VF35 (340x330) albeit at the sacrifice of a little response (1bar@ 2900 1.4@3200)..!

lockytaylor

Got it done by Ian at power engineering. I know they tend to give good readings, but I am optimistic that is because they are good tuners...

I agree - the on road is fantasic. VERY VERY happy - drives a dream and I am getting lovely backfires/pops between gear changes which is way cool.