Rotrex vs Turbo (AVO) for Track use (transient response, IATs, heat management, etc)

[glamcem]

Originally Posted by CSG Mike

I couldn't get the oil much past 230F or so on track with the oil cooler, and this is at a fairly quick pace.

We were at 245whp from a 172whp baseline with JUST the kit on and no oil cooler, and no other modifications. The 245whp wasn't a hero run. Rather, it was fully heat soaked, and what you'd see in a real world condition. The car does make more power with an oil cooler, since the tune will compensate for the lower oil temperatures.

Did you get another dyno run after adding the oil cooler or it was a different car? I wonder how it does with OEM exhaust without the heat soak issues

[finch1750]

Originally Posted by CSG Mike

I have.

Oil temps will universally be higher on a turbo car that has an oil cooled turbo. You'll need a cooler that can keep up. Under hood temps will be higher with the turbo car, even with a vented hood.

IAT will vary, but assuming a similar level of boost the Turbo car (with base AVO turbo) will have a higher IAT as well. With similar boost, the AVO car will have a small AUC advantage, but that AUC advantage is not sustainable. At heat-soak equilibrium conditions, the JR kit will make similar AUC.

With a turbo car you add power with a bigger turbo (diminished transient response), or more boost (higher IAT); your cats are probably deleted to begin with. With a SC car, you can add power with more boost (higher IAT), or increasing VE (deleting cats, same boost).

Do you have specific questions?

Directly related to the setup being discussed do you have thoughts and/or data on the Forestor DIT oil cooler (Cusco style essentially) vs. Other air cooled like Perrin or JR?

I am NA now and am looking to address cooling this year with a Koyo rad and forestor oil cooler I have an AT also that gets cooled via the rad as well. May or may not end up with a seperate tranny cooler as there isnt much data yet. I may go SC in a few years and would like to not buy something twice.

Sent from my LT30at using Tapatalk

[CSG Mike]

Originally Posted by finch1750

Directly related to the setup being discussed do you have thoughts and/or data on the Forestor DIT oil cooler (Cusco style essentially) vs. Other air cooled like Perrin or JR?

I am NA now and am looking to address cooling this year with a Koyo rad and forestor oil cooler I have an AT also that gets cooled via the rad as well. May or may not end up with a seperate tranny cooler as there isnt much data yet. I may go SC in a few years and would like to not buy something twice.

Sent from my LT30at using Tapatalk

Hard data? No. Anecdotal evidence? Yes. Thoughts? Yes.

Quite simply, the Forester oil cooler will not be enough. It's one of the first items swapped out for an oil-air cooler on WRX/STIs that are driven hard.

[sw20kosh]

Originally Posted by CSG Mike

Hard data? No. Anecdotal evidence? Yes. Thoughts? Yes.

Quite simply, the Forester oil cooler will not be enough. It's one of the first items swapped out for an oil-air cooler on WRX/STIs that are driven hard.

Thoughts on the Robispec oil-water cooler / radiator combo?

[FAER]

Originally Posted by sw20kosh

Thoughts on the Robispec oil-water cooler / radiator combo?

i really want this radiator but i've heard some bad things about her.

[sw20kosh]

Originally Posted by FAER

i really want this radiator but i've heard some bad things about her.

Like she is too big? What else?

[FAER]

Originally Posted by sw20kosh

Like she is too big? What else?

Like if you make a date with her to do a little under the hood work she doesn't show up for sometimes months...

[CSG Mike]

Originally Posted by sw20kosh

Thoughts on the Robispec oil-water cooler / radiator combo?

It works?

We went a different route with our car, but the main thing is to keep the car cool. Nobody knows the limit of the Robispec cooler because it's never been pushed hard enough. :shrug:

[Sportsguy83]

Originally Posted by FAER

Like if you make a date with her to do a little under the hood work she doesn't show up for sometimes months...

I was lucky and recieved mine very FAST, but have heard and read a few horror stories of 5+ months after paid full....

[FAER]

how do you like it?

this is what i'm considering going with

[Sportsguy83]

Originally Posted by FAER

how do you like it?

this is what i'm considering going with

The fitment was TIGHT, needed to hack a little here and there, but the end result is just incredible.

There is nothing I can throw at it to make it get hot... Back to back to back pulls, back to back to back 1/4 runs, I haven't tracked it in a road course, yes, but I've done about everything but... 5 back to back to back dyno pulls, 35 in 3 hours, nothing gets it uncomfortable.

[sw20kosh]

Originally Posted by CSG Mike

It works?

We went a different route with our car, but the main thing is to keep the car cool. Nobody knows the limit of the Robispec cooler because it's never been pushed hard enough. :shrug:

Robi never pushed it?!

[CSG Mike]

Originally Posted by sw20kosh

Robi never pushed it?!

He never made enough power to really push it. He also ran E85, which has some insane cooling properties...

[ultra]

Interested to hear more from folks who've tracked these cars with FI.

What kit setups, what supporting mods (particularly cooling), what power levels?

So far the CSG Rotrex car seems to be good on track running the base tune. Any turbo kits proven to be reliable as well?

The AVO kit looks solid for a good price but i'd like to see some real world examples. The Ptuning kit looks interesting as well due to the low mount turbo set up. Imperious Rex's Greddy turbo car seems to run well too.

Any verdict between front/top mounted turbos versus low mounted ones?

I'd really like a 'set it and forget it' type solution...something that's reasonably easy to set up and won't blow up in my face assuming routine maintenance.