Write-Up: Building a Custom PVC Fenderwell Intake

put the IAT sensor in the pipe.

Write-Up: Building a Custom PVC Fenderwell Intake - Page 2 FWI-IAT

This is what I did for mine. Drilled a big hole in an elbow and filed two slots, then put the IAT sensor in with it's gasket. I had trouble making it stay in so I wrapped the sensor and PVC in black vinyl electrical tape.[/url]

I put mine into a straight piece. Drilled the hole and made carefully fitted slots so I could put in the sensor and twist to secure. Worked out perfect cause the curve of the pipe puts just enough pressure on the sensors tabs to hold it tight but not mushroom the edjes or anything. I didn't even have to use any rubber seal or anything. For my new one, I may try a seal again just for S's & G's or perhaps silicone it a little bit.

Got my S&B 7" ordered. Just one quick question: How much does that straight section of PVC need to be cut down?

I read that article on the short ram intake and realized I was hurting my riv. pale

I had heard before that it wasn't the absolute best for our cars, but I never would have that it was that bad.

Needless to say I will be joining the 4" FWI crowd. clap

It's not certain damage, but our engines need the coolest possible air when you mod for power. The short ram is especially bad when your car is stopped at idle, or when you have exhaust headers, which increase underhood temps.

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown

Might as well reduce the possibility of damage even if it's not certain.

I still want to do a FWI, but would LOVE to see someone's pic of their enlarged fenderwell hole to fit it in. I'm seeing about 4deg KR today on hard accel on my LS1M, ambient of 60, IAT of 70, and this is with my coated Plog now installed, 3.8 pulley back on, and gas at about 89 octane. Once I get down to about a quarter tank I'll fill with 91 again, was running the cheap stuff while I was NA.

I may go 3.5" instead of 4". Are you guys using a rubber intake adapter at the TB? I want to use a silicone 45deg adapter elbow there, but the silicone doesn't really stretch, though it is flexible. It is a reinforced/braided silicone. The TB outside diameter is actually a hair over 3.75" at the ribbed edge that the tube has to slip over. Wondering if I ought to go 3.75" with the silicone...

1998 Riv wrote:: I still want to do a FWI, but would LOVE to see someone's pic of their enlarged fenderwell hole to fit it in

Mine is 4" dryer vent, but I assure you it's only prototype for now wink

I did not put the IAT in it (it's just laying next to the hose, close enough for now) and the hole I made is NOT pretty. It needs some cleanup, and I'm going to put some door edge guard on the sheetmetal edge. I more wanted to get fitment right first.

The thing I don't like about it is that I realized the air opening in the bottom of the fenderwell area is actually the bottom of the engine compartment anyhow. This means the filter is exposed to road spray and lots of sand (my filter was NASTY), and it's just drawing engine compartment air anyway. I think a behind-the-headlight approach might be better. Then you can remove the headlight assy at the track for ram-air style action 3gears

I'll take some pics when I get rid of the dryer vent.

96RivSCMI wrote:: Got my S&B 7" ordered. Just one quick question: How much does that straight section of PVC need to be cut down?

I read that article on the short ram intake and realized I was hurting my riv. I had heard before that it wasn't the absolute best for our cars, but I never would have that it was that bad.

Needless to say I will be joining the 4" FWI crowd.

what article?

https://rivperformance.editboard.com/series-ii-engine-transmission-f4/write-up-building-a-custom-4-fwi-t107.htm

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown

Aaah, page one of this very thread! Thanks AA!

That article was what got me looking at our fender wells and discovering that there's a "heat window" down low that allows the air filter to suck in hot engine bay air. The FWI is good, but not perfect. There's still a lot of hot air in our fender wells. More info:

https://rivperformance.editboard.com/series-ii-engine-transmission-f4/write-up-installing-fwi-filter-heat-shield-air-scoop-t1209.htm

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown

I'm going this route, available in 45 deg, 4" x 3.5" silicone reducer. smile

Ordered today, you don't want to know how much...

Write-Up: Building a Custom PVC Fenderwell Intake - Page 2 Elbows_002

$35?
i used a 4" OD coupler and it fits very snug. i dont even need the clamps, but they are good insurance

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily
Write-Up: Building a Custom PVC Fenderwell Intake - Page 2 Dsc_0110

Write-Up: Building a Custom PVC Fenderwell Intake - Page 2 Dsc_0110

That's awesome, Dave. Very good idea. But it's so... smurfy!

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown

That's just a file photo. I'm getting black. nono

I'm hoping that with it turned at a downward angle, I can go with 1 4" PVC pipe into the FW and my K&N.

Nice!

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown

The legs are both 6" long on it, should be a good fit to bend just at the overflow tank.

travis order it NOOOOW

www.stylinmotors.com

Don't bother clicking on the Buick listings, that's just Grand National stuff. Cost for the one I ordered: $67 to my door.... told you it wasn't cheap.

Well here is the initial set-up...

Write-Up: Building a Custom PVC Fenderwell Intake - Page 2 100_3150crop

I will finish painting next week and give better pics. I used 4" PVC and a 7" S&B. I took it for a spin a little while ago and am extremely happy with the result. Why didn't I do this sooner? dunno

Enthusiast Joined : 2008-02-18 Post Count : 215 Merit : 1

ok i want to do a 4" FWI, but my dad just doesnt like the idea of hard piping as it gets quite hot, and PVC supposably doesnt look good, so what can i do? Thanks for your help

my bros got 4' PVC, it hasnt failed yet?

well its on his regal but its still its gotta blower

Intense or ZZP intake tubing. its about 11-12 bucks a foot and supposedly works well. I have some sitting in my room waiting for me to have some free time right now.

» Write-Up: Installing FWI Filter, Heat Shield, Air Scoop
» Write-Up: Flexible Tube Fenderwell Intake
» Write-Up: 4" FWI Spectre Intake for Northstar (N*) Throttle Body+ LQ4 MAF
» Hood Scoops / Intakes
» My custom 4" Intake