CTR FlashPro tuning - fuel pump

[Night Fury]

Yes, there is a low pressure in tank pump and a high pressure engine driven pump. Replacing the low pressure pump will not make any difference as the limitation is the high pressure pump.

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In your experience, knowing about the limitation the HPFP in the Type R brings to the table, can we just modify the internals like other car brand tuners do?
Some VDUBS have these options in the market.

https://www.ecstuning.com/b-autotech-parts/hi-volume-fuel-pump-upgrade-kit/10-127-100k/

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[AhmedTitef]

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In your experience, knowing about the limitation the HPFP in the Type R brings to the table, can we just modify the internals like other car brand tuners do?
Some VDUBS have these options in the market.

https://www.ecstuning.com/b-autotech-parts/hi-volume-fuel-pump-upgrade-kit/10-127-100k/

I wish we could. I can’t really find any part numbers for example for the HPFP or anything. But i know that n54 still have fuel issues and theu havent made anything yet. However they upgrade the internals of the in tank pump and see better fuel flow

 

[IHAVEAJEEP]

@Hondata - can you please explain why the Fuel Pump Duty Cycle is so low but the DIFP appears to maxed out at the 2900psi?

 

[Hondata]

@Hondata - can you please explain why the Fuel Pump Duty Cycle is so low but the DIFP appears to maxed out at the 2900psi?

The target fuel pressure is 200 bar, the actual fuel pressure is 199 bar and the pump duty is 43%. I'm not sure what you mean by 'maxed out'. The highest fuel pressure the ECU will target is 200 bar. At light throttle it only needs a small duty to achieve that pressure. At peak torque the duty will be much higher, but the pressure should be the same.

 

[IHAVEAJEEP]

Has anybody seen this? I don't know the first thing about fuel pumps but this looked interesting www.revlinekc.com/collections/2018-up-honda-civic-type-r-fk8/products/walbro-f90000267-450-lph-e85-fuel-pump

 

[remc86007]

Has anybody seen this? I don't know the first thing about fuel pumps but this looked interesting www.revlinekc.com/collections/2018-up-honda-civic-type-r-fk8/products/walbro-f90000267-450-lph-e85-fuel-pump

I believe that is an in-tank low pressure fuel pump. My understanding is that the problem with fueling in the CTR is the high pressure fuel pump, not the low pressure fuel pump.

 

[Hondata]

I believe that is an in-tank low pressure fuel pump. My understanding is that the problem with fueling in the CTR is the high pressure fuel pump, not the low pressure fuel pump.

That is correct; the link is to a low pressure fuel pump, and the problem is the volume of the HPFP. Also I don't think that walbro pump in the link will fit in the stock basket as the pump needs to be 38mm diameter and very short.

 

[PhAzE7]

Any kits out there already or any in the works yet?

 

[Streetthrowback]

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[Gmedalion]

Yes, is anyone working on a better HPFP for modded CTR's??

 

[Fk8tjt]

[QUOTE=" I'm comfortable with peak duty cycles being around 95%. If the duty touches 100% very briefly then it is not necessarily anything to get too concerned with as long as the fuel pressure does not drop.

Questions?[/QUOTE]
My fuel pump briefly maxed out and fuel pressure dropped by 300psi, is that considered a small drop and nothing to worry about?

 

[FK8_K20c1]

[QUOTE=" I'm comfortable with peak duty cycles being around 95%. If the duty touches 100% very briefly then it is not necessarily anything to get too concerned with as long as the fuel pressure does not drop.

Questions?

My fuel pump briefly maxed out and fuel pressure dropped by 300psi, is that considered a small drop and nothing to worry about?[/QUOTE]
Does it happen when you floor it and then decreases?

 

[AdamD19DFK8]

[QUOTE=" I'm comfortable with peak duty cycles being around 95%. If the duty touches 100% very briefly then it is not necessarily anything to get too concerned with as long as the fuel pressure does not drop.

Questions?

My fuel pump briefly maxed out and fuel pressure dropped by 300psi, is that considered a small drop and nothing to worry about?[/QUOTE]

It's very likely to get up near 100% when the turbo spools up, then it would drop right after. For me sometimes it gets close if I gun it in second or third from a cruise then drops right back down. When I'm flying in 4th gear it drops down below 80 some times. 100% is only a problem when it is at peak duty throughout the whole power and. That's usually telling you that you're running too much boost. 100% for a brief moment is nothing to worry about however.

 

[FK8_K20c1]

My fuel pump briefly maxed out and fuel pressure dropped by 300psi, is that considered a small drop and nothing to worry about?

It's very likely to get up near 100% when the turbo spools up, then it would drop right after. For me sometimes it gets close if I gun it in second or third from a cruise then drops right back down. When I'm flying in 4th gear it drops down below 80 some times. 100% is only a problem when it is at peak duty throughout the whole power and. That's usually telling you that you're running too much boost. 100% for a brief moment is nothing to worry about however.[/QUOTE]
Same happens to me.

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