hi there
just a quick question by simply changing the tdo4 for a tdo5 how much more power will i get the only other mods are exurst and induction kit .
the car is a 1995 wrx .
thank you for your help kind people

 

You'll gain at most about 5-10bhp unless you also increase the boost to take advantage of it! Ideally you will want an add in chip with optimised boost/fuel/ignition for the larger blower.

Simon

 

MY95 WRX will have a TD05 as standard.
Wes

 

I aim that you have a wrx wagon as the saloon has the Td05 as standard. If you just change the turbo you will get very little gains.
Even if you run at the same boost pressure you run the risk of running lean as the Td05 will push more air through at the same pressure.

I have recently changed mine to a Td05 but also fitted a z4 ecu off a 95 saloon which should give it 260ps as apossed to 220ps.

When changing the Td04 for the Td05 make sure you get the metal water pipes with the turbo.

 

In the for sale section "mojor sarcasm" is selling a ecu which is chipped for a 95 with Td05 with filter and zorst this should be good for 280ps.

 

Please don't propogate that pathetic myth!

Starters, more air = more power and you just said he wouldn't get any (so be consistent), second, airflow is measured by the MAF and fuelling set accordingly so it won't run lean anyway!

Simon

 

thank you to everone i have a chip on the way and the boost will be raised to 1.1 bar and then ill have the decat pipe done so should show some good figures i hope anyway its going on the rollers next week so il post the results again thank you for your help.

 

This is what I said.
As for it not running lean well thats just bull. If I was to buy the biggest turbo, huge intercooler and super sexy cone filter and try run it on my ecu it would be fine would it?

No didnt think so.

 

We were talking a straight swap of Td05 for TD04, and yes it would be just fine, boost control would be out a bit, but we were talking of running lean.

And I could hit the button lots of times if I want to, it wouldn't make me any more right!

Simon

P.S. Day job has been mapping ECU's for most of the last 18 years.

 

This is a place of debate and very often someone will have a different opinion or knowledge of a given subject. If it offends when someone disagrees then my suggestion is don't post.