rayman

What boost levels can you achieve with a TD05 through the gears ?
When rev range should I be see max spooling ? How can this be improved ?

1st 1.0 bar ?
2nd 1.1 bar ?
3rd ?
4th ?
5th ?

Darren king

The tdo5 is a big turbo with a lot of lag, I found on my 93wrx that in 1st gear it never had a chance to spin up fast enough. Second and third were the best gears, it comes in late between 3000 and 3500 rpm with a big kick

I used to get about 14- 15 psi peak in third and fourth dropping to 12 held boost on a cold day.

rayman

Darren

whats 15psi in bar measurement ?

You still using a TD05 ?

teknopete

Used to run my TD05 at 26psi peak (when on the strip)
Also at 1 stage when the hoses blew off the boost control
circuit maxed out @ 30 PSI (the engine was most unhappy).
The TD05 is a good turbo in general capable of a fair amount of boost in comparison to the turbos on the newer cars. OK a little slower to spol up, but when they do u know they have IMHO a good base for tuning but beware, on a std engine it can generate more boost than the engine can handle.

Pete

dowser

In standard form the 90 degree inlet elbow is a big restriction to flow. With this removed and a bit of porting/polishing it can achieve good results - I get 1 bar (14.5 psi) at around 3k1 in 4th.

Richard

Edited to add: I have a Maxim manifold too, which I guess raises the spool point a little.

[Edited by dowser - 12/19/2002 8:20:52 AM]

AndrewC

I'll be fitting a f/e TD05 ported/polished as per Dowser's suggestion but with ported OEM headers to in January, so we'll see then what the boost threshold with this setup is.

Andrew...

rayman

is it healthy to run 1.1 bar in all gears, i have my95 cdb,water spray,PPP ecu,hks hiper & downpipe, GGR induction ?



looking to upgrade the fuel pump to walsbro,FMIC and injector after xmas.

[Edited by rayman - 12/19/2002 9:37:33 AM]

Pavlo

What I don't understand is the 95 Prodrive ECU is mapped to 13psi, and certainly shouldn't be holding 16psi, fuel cut is at 15.4psi IIRC.

Something else has been done to the car, do you know what?

Paul

rayman

Pavlo,

The ECU was brought from a Prodrive engineer, All I can tell u is that he said it should see 280-300bhp no probs.

The car now runs okay holding 1.1 bar in all gears. I adjusted the actutor 1 turn out and it stablizes without the fuel cut or overboost.

Is it safe to run this or should I drop it down to 1.0 bar completely ?

dowser

Does the ecu say JECS on the front of it?

Richard

teknopete

Shouldn`t have any problems with 16psi (1.1 bar)
It would be an idea though to fit some form of monitoring device to ensure the fueling is adaquate (lambda link etc) and if you want to go bananas fit a knocklink as a visual indicator for knock.
Thaough at that pressure there shouldn`t be any knock probs if the cars been well maintained.

Pete

Fuzz

Just a bit of info for anyone interested,

PPP ecu (00MY)
1.3 Bar Peak / spike
1.1 Bar held
0.9 Bar round at the red line

all connected to decat down and PPP centre and backbox (if that makes any difference)

amazing what you can do with a set of Defi's

Andy

rayman

Richard

I will take a look at the ecu 2moro and see what it reads. One thing that concerns me is the spool up time on the turbo. A m8 of mines tends to spool up alot quicker. I have two big holes in my downpipe would this contribute to it ?

Pavlo

Depends what car your mates is. The TD05 isn't fitted to the later cars, they have a TD04 which will come in some 800rpm earlier, but won't be flowing nearly as much air when hold 1.2 bar to the redline.

When you say 2 holes in the downpipe, what do you mean? Do you mean the exhaust is blowing?

I am very interested to know what makes it (the ECU) tick.

Paul

chockymonster

I'm seeing 1.16 bar peak on a 96 wrx
Seems to hold 1bar although watching the boost gauge does have a nasty problem of increasing tree collision possibilty......

I used to peak at .53 in first, with downpipe and cat bypass I'm seeing .96 in 1st (and lots of pops and bangs )

KRM

I'm seeing peaks of about 1 - 1.1 bar on my TD05, holding at about 0.8ish WOT in 4th n 5th.

Never felt anything quite as brutal as second gear at 1 bar (but then it is a 96 STi RA )))

This is with apexi induction, custom downpipes, std center with cat, custom backbox.

SecretAgentMan

I'm running my front entry TD05 at 1.4 bar held midrange (sloping off to 1.2 bar at 7k) at the moment, I get 1 bar at 3500 in 4th (iON 4-1 header, and still that crappy OE inlet ), this will get worked on, as will midrange boost.

A great little turbo.

/J

SecretAgentMan

Oh...I do get ~1,2 bar in 1st if I put the foot down around 2k.

If I'm moving in 2:nd below boost threshold I get the usual 1.45 bar peak, and 1.4 held.

Damn nice really.

/J

KRM

What is it you've done to acheive that? Want more boost!!

SecretAgentMan

Link ECU, FMIC, fuel pump, fuel preassure regulator (running higher than standard preassure on the injectors).

And a shedload of other things.

ECU remap is the key though, as is intercooling.

It's a regular chocolate spec euro turbo (MY00) otherwise.

/J

[Edited by SecretAgentMan - 3/27/2003 11:02:33 AM]