I would be targeting a 85mm Pulley for that build. The 12.5:1 Compression ratio standard isnt kind to lesser octane fuels.

I cant recall anyone building a Low CR Stroker kit and not running E85 or running it on standard pump 98/99RON Fuel.

You'd be in uncharted territory for our kit i believe...

What CR is your built motor? Do your temperatures start to rise after 20-25 mins of hard track time or do they stay at the temps shown in the graph?

That graph is lap 7 i believe in 10 lap stint At Phillip Island, they are stable. Temps do not rise.

Obviously Maintaining the engine cooling system is a priority.

Compression ratio is 11.2:1 in our car.

There is an Edelbrock (TVS1320) kit on a built motor/small pulley that can make 284whp on pump gas. Thats using stock compression ratios.

So it can be done but seems you don't get much extra power from the extra boost.

Our fuel is a bit better than pump gas though so maybe ~310 wheel HP is possible.

Matt@cosworth has said on one of the UK forums that he thought around 11:1 compression would be right for their set up on a built motor.... so maybe dropping the CR slightly is the way forward to avoid knock with non-e85 fuels.

People who go FI here at the California Tracks struggle with coolant and oil temps when going FI especially in the summer (I was one of them). I am guessing your super low coolant/oil temps are mainly due to the V-mount oil cooler setup that doesn't block much of the radiator. Did you delete the stock crash support beam and A/C condenser?

True for stock motor

Forged internals with lower CR should allow for more boost I believe.

Guys I need your inputs to help me decide... Im torn between HKS v3 or Harrop... I like both but have to choose one as I plan to go FI Feb 2017.
I just need to know if I can hook up AEM water/meth injection kit to Harrop kit??? I ckecked every photo online and cant see a place/port to fit the AEM injector?? Any of you have Harrop kit can confirm??
Other wise I'd go to HKS v3.

Resons is octane rate in my country is only 90 :(

Guys I need your inputs to help me decide... Im torn between HKS v3 or Harrop... I like both but have to choose one as I plan to go FI Feb 2017.
I just need to know if I can hook up AEM water/meth injection kit to Harrop kit??? I ckecked every photo online and cant see a place/port to fit the AEM injector?? Any of you have Harrop kit can confirm??
Other wise I'd go to HKS v3.

Resons is octane rate in my country is only 90 :(

Yes the oil cooler does help keep things in check, and we thoroughly recommend the use of any oil cooler for track work. Ours works very well diverting hot air away from the engine bay and Inter cooler/radiator heat exchange cores.

the car currently has working AC.... not much of a track car i know... but its there, not removed. Neither is the crash beam.

http://blog.perrinperformance.com/tag/harrop/

Have a look at this setup with Water/Meth Injection on a FA20 powered WRX

Wow thats a brutal build @_@ nice
And its great it was post tvs roots, but I was woundering... if I drill holes in the runners wont that void my supercharger warranty?? Also for the long run it wont cause metal to cracks due to thermal stress (heat during duty and cooldown when the car off) I mean in case the drilling was not done in a proper way?

What i was thinking is to make wmi pre oem throttle by using throttle spacer and drill a hole into it for the wmi.
But that wrx is really more effective to remove heat

It totally will void the SC warranty. I don't know about how the manifold was cast, but it seems solid and well designed. I think Perrin took the cost of brand new units for the project as a proof of concept build. Best of both worlds when you can twin charge a car with limited displacement. The Lotus and MR2 groups have done it for a while, but at great cost since they require built engines (and in some cases, transmissions/axles).

Absolutley.

A tune from Harrop for non-US fuels would still be useful as a starting point for MAF scaling and cam angles. The MAF scaling is particularly important since the kit replaces the MAF housing.

@HarropOz is there a way for end users to get a base cal from you for ECUTek? Knowing that it won't be usable out of the box, but still important as inspiration for a tune.

I ordered my kit from Neal on the 19th, and waiting patiently for delivery (honestly, I am), but trying to work out the details regarding tune. I will be doing install myself, my 2017 BRZ is already tuned on ECUTek, and I will need to be able to fire the car up and drive it for a couple hours to get to my buddies dyno so we can properly tune it.

Having something to go off of for the MAF will be paramount to the success of my install. Cruising down the freeway for two hours in limp mode is unappealing.