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 Inlet Pipe (Cast Aluminum) = 883g:

 

[blueroadster]

Here is more of a technical comparison...Parts diagram:

OEM Turbo Outlet Elbow ID (Cast Aluminum) (Not shown but where Part 4 connects): 50mm

Comparison of intercooler piping kits:

	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)	Throttle Body Inlet Pipe Connects to OEM Engine Bracket	Note
OEM	50mm/1.968" (Cast Aluminum)	53mm/2.086" (Plastic)	OEM ??? (Cast Aluminum)	Yes
PRL	OEM Cast Aluminum Retained	??? (Cast Aluminum)	??? (Mandrel Bent Aluminum)	Yes	Replaces Parts 4, 6, 7, 8 and 9. Cold side elbow replaced with a larger diameter elbow. Larger throttle body inlet ID was not mentioned. Assuming a common 16 gauge tubing was used, the ID for a 2.25" pipe would be 53.975mm/2.125" and ID for a 2.5" pipe would be 59.487mm/2.342". 4-ply silicon hose and SS screw clamps are provided for connection points.
HKS	54mm/2.126" (Cast Aluminum)	54mm/2.126" (Cast Aluminum)	OEM ??? (Cast Aluminum)	Yes, OEM Retained	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.
HPS	OEM Cast Aluminum Retained	OEM Plastic Retained	??? (Mandrel Bent Aluminum)	No	Replaces Parts 4, 7, 8 and 9. 2.25" Mandrel Bent Aluminum OD (53.975mm/2.125" ID if 16 gauge) tubing used to replace Part 4. 2.5" Mandrel Bent Aluminum OD (59.487mm/2.342" ID if 16 gauge) tubing used to replace Parts 7 and 8. 4-ply silicon hose and SS 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)	Yes	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.

All of the above intercooler piping kits provide a direct connection to each side of the OEM intercooler (or any aftermarket intercooler that uses the same connection points) and use screw clamps. Upgrading those clamps to T-bold ones would be better.

HKS and HPS replace Parts 4 and 7 with mandrel bent aluminum tubing (adds the need for two additional clamps) whereas PRL and Plazmaman replace those parts with upgraded silicone hose. PRL and Plazmaman options upgraded those particular parts better to still allow for engine torque flex.

PRL, HPS and Plazmaman are the only options that provide a larger replacement for the OEM throttle body pipe. PRL and Plazmaman options are better since they also provide a connection point to secure the part to the OEM engine bracket.

PRL, HKS and Plazmaman are the only options that provide a replacement for the OEM plastic intercooler outlet elbow. That particular part should be upgraded since the OEM plastic elbow will eventually fail over time.

The Plazmaman piping kit is the most expensive however, it offers a complete kit upgrade that is well designed and engineered IMHO.

 

[blueroadster]

Bump...Updated previous post with more detailed information.

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