[lciaccio]

so is it a common theme to notice increased hpfp failure or at least earlier due to tunes? we know its inevitable, but does it facilitate failure?

[Drakos]

1) Do you have a tune? - YES
2) What Kind? - JB3 ALPHA 7/4
3) Miles when first tuned - 500 KMS (MAP 1 TILL 1500 KMS)
4) Current mileage - 23000 KMS
5) Problems w/ tune (direct result). - Don't know if it is a direct result but experiencing long cranks for past 2 weeks. Probably HPFP but gonna change plugs this weekend just to see if it makes a difference.

[n54fanatic]

1) Do you have a tune? - Yes
2) What Kind? - Jb+ to Jb3 2.0 NOW Procede V4
3) Miles when first tuned -2500
4) Current mileage -12000
5) Problems w/ tune (direct result). - Just a severe case of whip lash.

[BayMoWe335]

Originally Posted by lciaccio

so is it a common theme to notice increased hpfp failure or at least earlier due to tunes? we know its inevitable, but does it facilitate failure?

Considering mine failed at 1,500 miles, stock...no.

[kjrulz]

Originally Posted by lciaccio

so is it a common theme to notice increased hpfp failure or at least earlier due to tunes? we know its inevitable, but does it facilitate failure?

yes it does. HPFP's are well known to go out often and randomly however consider this. I replaced my HPFP at 50k. Put the tune in and 500 miles later long cranks and half engine light.

[BayMoWe335]

Originally Posted by kjrulz

yes it does. HPFP's are well known to go out often and randomly however consider this. I replaced my HPFP at 50k. Put the tune in and 500 miles later long cranks and half engine light.

I replaced mine at 1,500 miles stock. Then I put on the tune and I am at ~5,500 with no issues.

Consider that.

[creaminz]

1) Do you have a tune? - Yes
2) What Kind? - PROceed V4 Autotune
3) Miles when first tuned - PROceed'd from 1100 miles on ODO.
4) Current mileage - 35000 miles
5) Problems w/ tune (direct result). - only problem is I keep thinking my car is fast enough to run ANYTHING on the street and got walked by crotch rocket

[UltraRacer13]

Anyone who tries to draw any real conclusion about the cause / effect of hpfp failure due to a tune based on sample size this small is a fool. If 5000 ppl respond to this thread then perhaps you have some usable data. with 20 responses you have nothing.

[Belarus]

1) Do you have a tune? Yes
2) What Kind? JB3 1.3 -> 1.4 -> 2.0
3) Miles when first tuned - 100km/60 miles
4) Current mileage - 42,000km/26,097miles
5) Problems w/ tune (direct result). - Have to change spark plugs every 20,000km/12,500miles & will never be as fast on 1/4 mile as E90 & 92 with similar tunes

[BayMoWe335]

Originally Posted by TXSailor

Anyone who tries to draw any real conclusion about the cause / effect of hpfp failure due to a tune based on sample size this small is a fool. If 5000 ppl respond to this thread then perhaps you have some usable data. with 20 responses you have nothing.

Thank you for that incredible observation. Genius. Now move along.

[Dr G13]

I thought the hpfp was more related to the fuel you guys use in the states? Hardly any n54's suffer from hpfp probs here in uk, maybe im wrong but I heard its something they put in US fuel?

[lciaccio]

Originally Posted by Dr G13

I thought the hpfp was more related to the fuel you guys use in the states? Hardly any n54's suffer from hpfp probs here in uk, maybe im wrong but I heard its something they put in US fuel?

probably the saltwater in the BP gas ..