Perrin Big MAF ACTUAL Inside Diameter

CicioSTi · 04-11-2008, 10:38 AM

Who has the down low on the ACTUAL ID of the perrin big maf?

Perrin says that it is 3" ID when you talk to them directly. But almost EVERYONE else says that its 3.25 or around 83mm ID

Anyone know 100% what it is?

CicioSTi · 04-11-2008, 11:01 AM

Never mind...Found it

"The i.d. on the Perrin is 77mm (or 3.0315in) on the inlet side and it necks down to 67mm on the exit side"

I will leave this thread open just for the info though!

Thanks guys

**P&L Motorsports** · 04-11-2008, 11:06 AM

Measuring one right now, it is 3" ID, 76mm-77mm. I'm just using a measuring tape, so It may be 1mm off or so.

santacruz02 · 04-11-2008, 11:06 AM

I see most people with just the 65mm, what would the benifit be from upgrading to the 70mm intake lets say if your stage 2

CicioSTi · 04-11-2008, 11:08 AM

Quote:

Originally Posted by P&L Motorsports

Measuring one right now, it is 3" ID, 76mm-77mm. I'm just using a measuring tape, so It may be 1mm off or so.

Thanks for the verification Ty...appreciate it!

You guys at P&L are awesome!

CicioSTi · 04-11-2008, 11:09 AM

Quote:

Originally Posted by santacruz02

I see most people with just the 65mm, what would the benifit be from upgrading to the 70mm intake lets say if your stage 2

Stage two you will see no benefit from a bigger intake..the benefit comes when you start maxing out your MAF, then you need to go bigger.

santacruz02 · 04-11-2008, 11:13 AM

Ah ok this makes sense! Now with the upgraded turbo inlet like the GMS.. There would be no gain seen either, just a smooth air flow? Sorry now I have defiantly...

CicioSTi · 04-11-2008, 11:18 AM

Quote:

Originally Posted by santacruz02

Ah ok this makes sense! Now with the upgraded turbo inlet like the GMS.. There would be no gain seen either, just a smooth air flow? Sorry now I have defiantly...

Gains would be minimal to none with a stock turbo.

If you want more info on it feel free to PM me.

04-11-2008, 10:38 AM	#1
CicioSTi Community Consultant Car: 2005 OBP STi Fav Mod: Learning Location: Bismarck, ND Posts: 1,333 Join Date: Aug 2005 Trader Rating: (4)	Perrin Big MAF ACTUAL Inside Diameter Who has the down low on the ACTUAL ID of the perrin big maf? Perrin says that it is 3" ID when you talk to them directly. But almost EVERYONE else says that its 3.25 or around 83mm ID Anyone know 100% what it is? This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by CicioSTi : 04-11-2008 at 11:11 AM.

04-11-2008, 11:01 AM	#2
CicioSTi Community Consultant Car: 2005 OBP STi Fav Mod: Learning Location: Bismarck, ND Posts: 1,333 Join Date: Aug 2005 Trader Rating: (4)	Re: Perrin Big MAF ACTUAL Inside Diameter??? Never mind...Found it "The i.d. on the Perrin is 77mm (or 3.0315in) on the inlet side and it necks down to 67mm on the exit side" I will leave this thread open just for the info though! Thanks guys

04-11-2008, 11:06 AM	#3
P&L Motorsports Authorized Vendor Car: Subaru STI Fav Mod: Tuning Location: Franklin Park, IL Posts: 233 Join Date: Mar 2006 Trader Rating: (0)	Re: Perrin Big MAF ACTUAL Inside Diameter??? Measuring one right now, it is 3" ID, 76mm-77mm. I'm just using a measuring tape, so It may be 1mm off or so.

04-11-2008, 11:06 AM	#4
santacruz02 Junior STI Driver Car: Blue 06 Sti Location: NJ Posts: 116 Join Date: Aug 2006 Trader Rating: (0)	Re: Perrin Big MAF ACTUAL Inside Diameter??? I see most people with just the 65mm, what would the benifit be from upgrading to the 70mm intake lets say if your stage 2 Last edited by santacruz02 : 04-11-2008 at 11:09 AM. Reason: Sorry for thread jack.

04-11-2008, 11:13 AM	#7
santacruz02 Junior STI Driver Car: Blue 06 Sti Location: NJ Posts: 116 Join Date: Aug 2006 Trader Rating: (0)	Re: Perrin Big MAF ACTUAL Inside Diameter??? Ah ok this makes sense! Now with the upgraded turbo inlet like the GMS.. There would be no gain seen either, just a smooth air flow? Sorry now I have defiantly...