BigJim

what is the difference between m spec and v spec core greddy fmic's. Obviously the m spec isnt as good, less costly, but what will is ee performance wise.

rx73rotorj

The Search button is a good tool and this subject has been covered already.

What Do plan on runing or what do you have?
What Are your HP Goal?
What is the 7 going to be doing drift, autox, drag, street?

Mahjik

iTrader: (1)

https://www.rx7club.com/showpost.php...8&postcount=17

teri064

isnt m series good for 350 whp street racing most...?

Mahjik

iTrader: (1)

It's not really the rwhp amount, it has to do with how much heat the turbos are producing. i.e. there is probably a lower limit with the stock twin turbos due to the amount of heat they generate as they go higher in boost verses using a more efficient single turbo.

BigJim

i did search but nothing highly informative came up, my bad. anyways. right now i have 310 rwhp. heres the mods list.

Large Streetport
Mazdaspeed radiator
Mazdaspeed short shifter
Silicone vacuum hoses
M2 Intake
Greddy elbow, all hard pipes to stock intercooler
Bonez downpipe
High flow cat
Custom catback exhaust
PFC

This is all dynotuned at 10 psi.

As for a goal. Eventually i plan on either getting bnr's or going single. I am lookng for around 400 rwhp

BigJim

oh yea, i plan on doing autocross, road course type events.

teri064

i see...so what about 14 psi on stock twins , and after a year i ll put a gt35r 12-14psi....

will that intercooler be ok for road racing sometimes and also goint some trips once in a while?

Mahjik

iTrader: (1)

To know for sure, you have to monitor your charge temps and see if they are 'ok' for the boost levels you are trying to run. That's the only way to know for sure. Having said that, I rarely see people needing anything but the popular intercoolers for their applications here on the forum.

IMO, I do not recommend FMIC's for road racing. While you can 'make them work', the cars I have seen with them still have higher cooling temps than ones with SMIC's or v-mounts. If you really want a FMIC for road racing, at least get one that doesn't block the entire front opening like a Blitz or Apexi FMIC. Those will at least allow you to duct some unobstructed air to the radiator.