Big Sky WRX

Looking to upgrade my TD04, but still need quick spool as I autox and rallyx and have considered the 35 or 24/28/29 family.

These maps appear to be well kept secrets, my searching has been in vane thus far.

Thanks in advance.

Mike

big mike

If you are prepared to invest a little then look here

http://www.turbocalculator.com/index.html

only $14.95, thats about £7 i think?

Hope this helps

Mike

john banks

Same compressor as VF23. I've put load lines on this one:

john banks

I would choose the VF35 if you want a small turbo, TD05 if you want medium, TD05/06-20G if you want large. (310-340 BHP VF35, 330-370 BHP TD05, 20G, 400-440 BHP)

Big Sky WRX

John,

I show the 23 w/ a 46.7 compressor (P20 exhasut), the 35 w/ 47.9 (P15 exhaust)-same compressor as the 30/34- is this correct?

Everything I've heard has been very positive on the 35 (for my needs anyways). Wonderful spool and great looking low/mid range torque.

Thanks

Mike

97 rExy

30/34 comes with P18,35 is known as slightly picky here in OZ.

john banks

Sorry meant to say VF24/28/29 compressor is nearly if not identical to the VF23. VF3x maps are not public domain.

Big Sky WRX

John- OK that makes sense. Too bad they're so secretive about their maps.

MJU1983- picky in what way? I've only heard good (except that boost creep needs to be taken care via a porting of the wstegate).

Mike

EMS

The last MY99 I did with the VF35, had 1 bar @ 2900 in 4th gear. Very responsive and it produced about 315 HP and 300 Lb/Ft. All this at moderate boost and with conservative mapping. The car only had free flow 2.5" exhaust, colder spark plugs and a Walbro fuel pump. I like this turbo more and more..... (the bad thing is that porting of the wastegate is needed)

Mark.

Big Sky WRX

Great #'s! I know some have run it w/ pretty good luck on oem injectors/pump, but when the boost is bumped a little bit injector duty cycles are near maxxed. I would at the same time swap in 565 inj and a uprated pump. I'd also have to have my Ecutek map updated as well.

This turbo is almost non existant stateside (we've recently been flooded w/ 34's and 22's at very good prices, but for some reason the 35 doesn't seem to make it over.

carlos_hiraoka

best autox and rallyx turbo is definetly VF35, think xxtuning.com had a couple of this turbos .....

Mark, no need to port these babies when using a restrictor .....

Carlos H.

EMS

In a new age WRX you will need bigger injectors to take full advantage of the VF35! The fuel pump I recommend in all aplications above about 280 HP. I've seen massive fuel pressure drop @ around 300 HP in a almost new car with the standard pump.........

P.S. I have a few VF35 on order from Z1-performance in the U.S.

@ Carlos: I don't think you will experience boost creep after 6000 RPM with restrictor, however you would like to have it I suppose.........

Mark.

Fatman

...I bought my VF35 from XX Tuning. Considerably cheaper than a UK supplier would have been (if they had stock). Produced 345bhp & 314 lb/ft @PE (UK MY00 with other mods, of course).

Big Sky WRX

More good #'s! For some reason I thought these were more available in the UK, but looks like everyone is sourcing them stateside- interesting.

Anybody know what models/markets (if any) these were oem for Suby's?

Maybe v6 STi's?

Mike

EMS

OEM on Eurospec STi 7 and 8!

Mark.

Big Sky WRX

Then ther should be some used ones floating around. JDM STi v7 got the 34, US STi v8 got the 39, JDM v8 got a twinscroll unit I believe.

They certainily use a lot of different turbos.

Mike