evobad

hi guys iv got one of these fitted on my car what is max boost i can run this turbo at,its running 1.3bar at moment

New_scooby_04

iTrader: (4)

It's not about how much boost mate, it's about how much boost you can run efficiently i.e. that will translate into more power. Smaller turbos don't generally like having their necks rung! You're probably around the max already. Best to talk to your mapper!

Ns04

boosted

She is maxed out @ 1.3 bar, time for a bigger turbo! What size are your injectors out of interest?

Midlife......

iTrader: (2)

Andy Forrest's TD04 hybrid is all about power / torque low down the rev range, unless you invest heavilly in a twin scroll set up you will have to sacrifice the early pick-up.....

Shaun

boosted

Not that the ej20 has any low down torque or power even if you stick boost up it! They don't really come to life until 4000 rpm anyway

jura11

iTrader: (7)

No matey AFTD04H is different animal to all turbo available on Impreza.
This turbo will make at top 320bhp,but spool which have this turbo on bog standard EJ205 without the AVCS or other mods is just astonishing.

Here is mine bog standard TD04 with OE boost(this has been tested on LPG at this time )





Jura

evobad

thanks guys well car has been maped by andy by last owner so 1.3bar is max,iv had other imprezas running td05 but this td04 is very impresive but as stated only good for 320bhp which i think my car is at.

boosted

200 lbft isn't huge torque min. Ken fit am at ma bonny loon?

boosted

My old car made 350 lbft at 3000 rpm, that's torquey!

Midlife......

iTrader: (2)

Bet your old car wasn't running a huge turbo on a small displacement / square engine though

Shaun

jura11

iTrader: (7)

Bloody hell,that's not mapped JDM WRX with TD04 with OE boost 0.9-1bar on LPG,what you are think?

I'm now running little bit more than double of this



Jura

boosted

Exactly my point lol, it wasn't an ej20 that's for sure! They are revvy not low down torqey beasts!

Midlife......

iTrader: (2)

And my point is that for *best* low down performance you need a small turbo and / or a twinscroll set-up

Wouldn't call the EJ20 revvy comapred to something like a civic with VTEC LOL

Shaun

boosted

just out of interest how do you know if your td04 is an AFP one or not? ive just taken mine off and changed it for a td05 20g, it could be a hybrid as andy did a lot to my car before i bought it.

andythejock01wrx

My T20 Spec C is as revvy as the Prelude 2.2 VTec I once had, which was pretty revvy!