4.6L GT Intake Spacer ??
02-16-2006, 03:58 AM
#21
Mustang Nazi
Join Date: Sep 2004
Location: Texas, baby
Posts: 13,444
RE: 4.6L GT Intake Spacer ??
ORIGINAL: MTShambles
Personally, I havnt seen any real BIG gains from those spacers, but that doesnt mean they're not worth it.
As far as throttle body sizes go, I would go with a 70mm if you plan on staying Naturally Aspirated or are just doing bolt ons. Its not worth it to go to a 75mm, as those are designed for more FI setups.
MAF and Fuel injectors, dont even waste your time. You would need to get a retune to accomidate for the change, and the stock MAF is good up to 400HP before it pegs, a place you're not going to get to with just bolt ons.
Personally, I havnt seen any real BIG gains from those spacers, but that doesnt mean they're not worth it.
As far as throttle body sizes go, I would go with a 70mm if you plan on staying Naturally Aspirated or are just doing bolt ons. Its not worth it to go to a 75mm, as those are designed for more FI setups.
MAF and Fuel injectors, dont even waste your time. You would need to get a retune to accomidate for the change, and the stock MAF is good up to 400HP before it pegs, a place you're not going to get to with just bolt ons.
I agree with everything you posted with one exception. I recommend the 75mm TB even for N/A motors. I ran it on my old motor and didn't see it as overkill and I am running it on my new N/A motor.
Also, I want to agree and restate what you posted and what I have been saying FOREVER..."Guys, DON'T waste your $$$$ on a MAF unless you go FI and then if you do, get a Lightning 90mm MAF".
02-16-2006, 04:07 AM
#22
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
RE: 4.6L GT Intake Spacer ??
ORIGINAL: code3GT
Get the plenum and 75mm tb and don't waste your $$ on a MAF (mass air) unless you go with a supercharger or turbo. If you want the bling, go with Accufab...if you are only interested in performance, get the C&L plenum and BBk 75mm throttle body.
Get the plenum and 75mm tb and don't waste your $$ on a MAF (mass air) unless you go with a supercharger or turbo. If you want the bling, go with Accufab...if you are only interested in performance, get the C&L plenum and BBk 75mm throttle body.
02-16-2006, 04:07 AM
#23
1st Gear Member
Join Date: Jul 2005
Location:
Posts: 149
RE: 4.6L GT Intake Spacer ??
I dont have any dyno numbers to back up my 70mm v 75mm claim, so I cant say if you are right or wrong.
I dont see why more flow wouldnt hurt the engine, although I would think it would lean you out a little more than you would like. I dunno though. I would have to install them both on the same car and see if there was any difference.
I dont see why more flow wouldnt hurt the engine, although I would think it would lean you out a little more than you would like. I dunno though. I would have to install them both on the same car and see if there was any difference.
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