Throttle Body Inlet Pipe (a.k.a., Upper Charge Pipe) Replacement?

[blueroadster]

I am looking to replace the cast aluminum OEM upper charge pipe to get rid of another unnecessary heat sink under the hood. Any aftermarket suggestions for that specific part by itself?

I've already replaced the 5.6 pound cast aluminum OEM turbo inlet pipe with a carbon fiber Eventuri one that weighs 0.8 pounds as mentioned in this thread.

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[blueroadster]

Bump...Part in question is number 8 in the below diagram:

Is anyone aware of any aftermarket upgrades for this particular part? Ideally, I am looking for one made from carbon fiber that either connects directly to the 66mm OEM throttle body or supports connecting to a larger 74mm throttle body.

 

[Chilly613]

Never seen a carbon one before, but HPS does make a charge pipe kit with all aluminum tubing, so there's no cast aluminum like other kits.

https://hpsperformanceproducts.com/...h-gen-honda-civic-type-r-fl5-k20c1-2-0l-turbo

 

[blueroadster]

Never seen a carbon one before, but HPS does make a charge pipe kit with all aluminum tubing, so there's no cast aluminum like other kits.

https://hpsperformanceproducts.com/...h-gen-honda-civic-type-r-fl5-k20c1-2-0l-turbo

Cool and thanks. I am curious as to what options are available if one were to upgrade to an oversized or Bosch 74mm throttle body.

 

[r513ctr]

Plazmaman make a piping kit now also

https://plazmaman.com/product/honda-civic-fl5-type-r-high-flow-piping-kit/

 

[Chilly613]

Cool and thanks. I am curious as to what options are available if one were to upgrade to an oversized or Bosch 74mm throttle body.

It would probably still be the same options, its usually the inner bore and the butterfly flap of the throttle body that's larger. The outside dimensions usually stay the same so you can still use stock or aftermarket charge pipes of the same size.

 

[ModJPB]

Stay with the OEM throttle body. It's a turbo charged car, it gets its air by pressure not so much free flow. I did a larger tb on my car for 6months and my fuel mileage went down by 4mpg with no gain in HP. Also it was very annoying to just cruise on the road, because the slightest touch of the pedal would make it accelerate instead of maintaining a speed.

I also did charge pipes. The aluminum pipe absorbs heat so I wrapped the upper pipe in thermal wrap. Slightly better response and midrange HP. There is also a slight increase in turbo noise (throaty).

 

[blueroadster]

Plazmaman make a piping kit now also

https://plazmaman.com/product/honda-civic-fl5-type-r-high-flow-piping-kit/

Cool and thanks...Something that I am considering and not bad for around $700.00 USD shipped to the east coast. Do you have the piping kit installed? If so, how do you like it and any comments on the fit/function/finish?

 

[blueroadster]

After further research, I went ahead and ordered the Plazmaman charge pipe kit with a raw finish. Options that upgrade the throttle body inlet pipe seem to be limited to PRL, HPS and Plazmaman.

 

[blueroadster]

Plazmaman charge pipe kit arrives tomorrow. Import duties were not bad being $44.34.

 

[blueroadster]

Link and information regarding the HKS Intercooler Pipes that I installed.

The upgraded Plazmaman High Flow Piping Kit arrived today. Here are some PICs and details as there is not a lot of information available about the kit:

Intercooler Inlet Elbow (Hot Side - Cast Aluminum) = 558g. Internal identification stamp:

Intercooler Outlet Elbow (Cold Side - Cast Aluminum) = 612g

PIC of both elbows (Left = Inlet and Right = Outlet):

Throttle Body Pipe (Cast Aluminum) = 883g:

 

[blueroadster]

Here is more of a technical comparison.

OEM Turbo Outlet Elbow ID (Cast Aluminum): 50mm:

	Intercooler Inlet Elbow ID (Hot Side - Part 5)	Intercooler Outlet Elbow ID (Cold Side - Part 6)	Throttle Body Pipe ID (In and Out to Throttle Body Inlet - Part 8)	Note
OEM	50mm/1.968" (Cast Aluminum)	53mm/2.086 (Plastic)	OEM ??? (Cast Aluminum)
HKS	54mm/2.126" (Cast Aluminum)	54mm/2.126" (Cast Aluminum)	OEM ??? (Cast Aluminum)	Replaces Parts 4, 5, 6 and 7. Mandrel bent aluminum tubing ID (54mm/2.126") replaces OEM rubber hose Parts 4 and 7. Standard silicon hose and screw clamps are provided for connection points.
Plazmaman	59mm/2.323" (Cast Aluminum)	65.75mm/2.588" (Cast Aluminum)	65.75mm/2.588" (Cast Aluminum)	Replaces Parts 4, 5, 6, 7, 8 and 9. Heavy duty silicon hose (5mm wall thickness) replaces Parts 4, 7 and 9. Standard screw clamps are provided for connection points.

Interesting Note: The actual OEM Turbo and MHI Stage 2 Compressor Outlet IDs are ~8mm smaller than the OEM Turbo Outlet Elbow ID.

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