OFT datalog with Perrin intake

[steve99]

Originally Posted by 2much

This is a new topic for me.

I have been running oft stg1 91oct v2.06 tune as well... I have a K/N drop in panel filter, perrin inlet hose, and otherwise unmodified box and snorkel. Should I be paying attention to my MAF scaling? Car seems to be operating normally.

Maf scaling needed if you change the entire intake or part of the intake that changes the position or the diameter of the tube the maf sensor or the patern of air flowing past the maf sensor.

just an intake tube or filter doesnt require maf rescale.

[2much]

thanks for the help guys. And now, to complete the thread hijack - am I still current in thinking there really isn't much gain by doing anything else to the intake (or implementing a full aftermarket solution)?

[Cop]

Originally Posted by 2much

thanks for the help guys. And now, to complete the thread hijack - am I still current in thinking there really isn't much gain by doing anything else to the intake (or implementing a full aftermarket solution)?

See below for some of Grimmspeed's research:

http://www.grimmspeed.com/grimmspeed...-2013-brz-frs/

[steve99]

Originally Posted by 2much

thanks for the help guys. And now, to complete the thread hijack - am I still current in thinking there really isn't much gain by doing anything else to the intake (or implementing a full aftermarket solution)?

On an NA car best bang for buck is catless header, tune and add for E85 (with appropiate tune)if you have it available. and maybe drop in filter

just good catless header,tune,E85, drop in filter will give you around 85% or more of the possible gains from bolt on mods NA , gets you arround 30-35 wheel hp.

can be done for about $1000

doing the rest of the exhaust and intakes, power blocks spacers ect is expensive and gains are not that much more on an NA car

if you want more just go FI or sell the car

[2much]

Originally Posted by steve99

On an NA car best bang for buck is catless header, tune and add for E85 (with appropiate tune)if you have it available. and maybe drop in filter

just good catless header,tune,E85, drop in filter will give you around 85% or more of the possible gains from bolt on mods NA , gets you arround 30-35 wheel hp.

can be done for about $1000

doing the rest of the exhaust and intakes, power blocks spacers ect is expensive and gains are not that much more.

if you want more just go FI or sell the car

I have OFT and OFH... unfortunately e85 stations are [very] few and far between around these parts, so I stick with an 91oct tune.

I can see there's some gain to be had with the grimmspeed intake, but is that $350+ going to net me more than a couple horses over my current intake setup? I am guessing no.

Out of the remaining exhaust parts (over, front, mid, axle) am I correct in understanding replacing the overpipe is most critical for gains? And the rest is less critical?

I already have the urge for FI... waiting on oft350 and ft86sf info

[steve99]

Originally Posted by 2much

I have OFT and OFH... unfortunately e85 stations are [very] few and far between around these parts, so I stick with an 91oct tune.

I can see there's some gain to be had with the grimmspeed intake, but is that $350+ going to net me more than a couple horses over my current intake setup? I am guessing no.

Out of the remaining exhaust parts (over, front, mid, axle) am I correct in understanding replacing the overpipe is most critical for gains? And the rest is less critical?

I already have the urge for FI... waiting on oft350 and ft86sf info

overpipe probably only worth doiung if your going fi, each exhaust part after catess header only worth a couple of hp NA. maybe hi flow or catless front pipe but gains not much and can be niosy\raspy when secondary cat changed.

turbos tend to be good at cutting noise and rasp though.

some fi guys have been destroying secondary cat due heat, so probably worth changing that or at least going to metalised hi flow that more durable with fi.

if you change muffler with catless header and hi flow cat or catless midpipe get a quiet one

[2much]

Originally Posted by steve99

overpipe probably only worth doiung if your going fi, each exhaust part after catess header only worth a couple of hp NA. maybe hi flow or catless front pipe but gains not much and can be niosy\raspy when secondary cat changed.

turbos tend to be good at cutting noise and rasp though.

some fi guys have been destroying secondary cat due heat, so probably worth changing that or at least going to metalised hi flow that more durable with fi.

if you change muffler with catless header and hi flow cat or catless midpipe get a quiet one

good to know, I wont bother dumping $300+ on an overpipe until it matters a lot more. thanks for the advice steve, as usual you are very helpful.

[Rescodna]

Hello all - Where does Perrin publish a MAF scale for their 2.75" intake? I looked on their site and I thought the whole thing with that intake was that it didn't require any changes to tuning, unlike their 3" bigMAF intake.

I'm considering this intake and have an OFT so if there's already a good MAF scale available for it I'd love to know.

Thanks!

[steve99]

Originally Posted by Rescodna

Hello all - Where does Perrin publish a MAF scale for their 2.75" intake? I looked on their site and I thought the whole thing with that intake was that it didn't require any changes to tuning, unlike their 3" bigMAF intake.

I'm considering this intake and have an OFT so if there's already a good MAF scale available for it I'd love to know.

Thanks!

end of this post has perrin scaling
http://www.ft86club.com/forums/showthread.php?t=64790

you might need to touch it up using proceedure in that post and vgi utility but will get you started.

.

[Rescodna]

Awesome - thank you Steve.

[2much]

Originally Posted by steve99

overpipe probably only worth doiung if your going fi, each exhaust part after catess header only worth a couple of hp NA. maybe hi flow or catless front pipe but gains not much and can be niosy\raspy when secondary cat changed.

turbos tend to be good at cutting noise and rasp though.

some fi guys have been destroying secondary cat due heat, so probably worth changing that or at least going to metalised hi flow that more durable with fi.

if you change muffler with catless header and hi flow cat or catless midpipe get a quiet one

do you think running stage 2 91 uel tune while only replacing the header and nothing else behind it is safe? I am reading about exhaust back pressure causing the car to run rich, and I'm not sure how serious it can be.

[phrosty]

Originally Posted by 2much

do you think running stage 2 91 uel tune while only replacing the header and nothing else behind it is safe? I am reading about exhaust back pressure causing the car to run rich, and I'm not sure how serious it can be.

Stage 2 is intended for catless headers. The other stuff doesn't matter.