Whats the difference between N75 & N75J

[Cupra Gsy]

As title......I no a few people have changed these but why? And whats the difference between them.

Bobby

 

[ian_cupra]

ones get a J and the others have different letters

not 100% to be honest, think its how they deal with the boost, have different settings for holding higher boost, i might be wrong and prob am

 

[krisbutler02]

id like 2 know this

 

[MIkey kc]

Think the standard valve is an F i changed mine for a J and it peaked a couple more psi that the F and possibley holds the boost better, ive had no issues with the J valve what so ever, but depending on what remaps you run you could possibley run into limp mode. It really hit or miss if you see any advantages.

 

[chrisjackson]

n75j reacts slower to ecu therfore holding slightly higher boost for longer

however the J version can cause overboost on some mapped cars. mapped cars tend to run better on the h version.

can also cure some of the 1.8t hesitation problems as the standard n75 can be a bit to sensitive and stop boost then allow boost very quickly

i think the standard 1 is F

 

[widdowd]

Standard N75 was the C version which was replaced with the F at a later date. Still running the C version on my car....

Daz

 

[A.m.C_Ibiza1]

call me stupid but do tdis have n75 valves!!!???