Civic-EG.com Forum 3.3.1

- Mon Feb 28, 2011 9:09 pm #241495 ok so driving around today in the civic i just bought my vtec crosses over at 6200 rpms i dont know any other b16a that are any higher then 5800 rpm cross over any help?? thanks

- Mon Feb 28, 2011 9:45 pm #241502 what ECU? sounds like it's chipped.


most common for Vtec swaps is a chipped P28

600whp Turbo 84mm LS/Vtec Drag Hatch

- Tue Mar 01, 2011 3:09 am #241566 i have no clue i did not get to look at that yet but i do have a pr3-j01 would it be safe to run that???

- Wed Mar 02, 2011 9:40 pm #241865 its a p72 and i think its been chipped

- Thu Mar 03, 2011 3:04 am #241908 Definitely been chipped if the crossover is at 6200rpm. Stock P72 crossover is at 4400rpm.

Hi, I'm John. I'm a hacky sackin', rock climbin', scuba divin', aircraft mechanic.

- Thu Mar 03, 2011 7:30 am #241958 ok so how do i find out what maps and goodies this p72 has??

- Thu Mar 03, 2011 1:05 pm #241982 ^^ you get it re-tuned

600whp Turbo 84mm LS/Vtec Drag Hatch

- Sat Mar 05, 2011 7:32 pm #242427 [quote="JUICE"]^^ you get it re-tuned [/quot

Def re tune with out knowing for sure what it is...... 6200 is a rather high crossover point.... I've heard that valvetrain damage can caused by higher crossover points unless it was what the cams were intended for like a 3/4 race cam or something like that......... its never easy on the parts to work at nd engage that higher speeds like that

94 Civic Hatch turbo b16 (My weekend warrior)
94 Civic Hatch SOHC VTEC ZC (DD) 33+ MPG

PANDA CREW No.20

- Sat Mar 05, 2011 8:49 pm #242441

^^ you get it re-tuned

Def re tune with out knowing for sure what it is...... 6200 is a rather high crossover point.... I've heard that valvetrain damage can caused by higher crossover points unless it was what the cams were intended for like a 3/4 race cam or something like that......... its never easy on the parts to work at nd engage that higher speeds like that

i've always heard LOWERING the crossover point was bad for STOCK valvetrains.. not saying raising it is any better/worse for it cause i really dont know, just usually seems people want that Vtak sooner and they end up causing problems

600whp Turbo 84mm LS/Vtec Drag Hatch

- Sun Mar 06, 2011 12:13 am #242473 ya im just swapping my pr3-j01 into it asap i dont even take it into vtec cause i dont like how high the crossover is so probelm solved


hey anyone want to buy a chipped p72 lol!!!


or maybe i will open her up and see what i can see just incase there is a reason for it being that way but with the way it runs now its highly unlikely