[jk20z3]

i have a k20z3 swap in my ek and i'm getting a speed cut at 6000 every time and heres my set up.
swap header
type s throttle body
short ram intake
everything else is stock i am not running kpro at the moment i'm running a PRC ecu
also do not have vss hooked up
fuel pressure is at 54
i have the primary 02 but i don't have the secondary.
car idles at 1400 after warming up

 

[w00t692]

sounds like it's not letting you cross into vtec.

 

[shiro4000]

do you have any CELs

 

[jk20z3]

Today it let me pass 6 k but I do have cel one for electrical overload one for the secondary 02

 

[NickV]

What ECU are u running since ur not running kpro? do you have a key imoblizer?

 

[jk20z3]

Im running a integra type r ecu PRC

 

[PatCtr]

it could be vtec not working when i had mine hit at 4400 the solenoid was bad and it would hit a revlimiter at 4k until fixed. note i had no cel ither.

 

[jk20z3]

alright so i found that if i hold the rpm at around 5500 rpm i can take it up past 6 still have no idea what is causing this.

 

[PatCtr]

sounds to me like the spool valve isnt working correctly, if you think about it when you hold the rpms your giving the spool valve enough time to build pressure to make vtec engage. i would say change the solenoid or you have a problem with oil pressure.

 

[jk20z3]

Well the thing is i don't have vtec at the moment because of my speed sensor.

 

[vietsol]

yup, no VSS on a stock ECU = no VTEC
also, no Reverse lockout

 

[jk20z3]

So i'm guessing i'm just going to have to get kpro to fix the problem . At least the price went down !!!

 

[PatCtr]

yea i think that will be your best bet. i would get myself a oil pressure gauge even its a $20 from autozone, but thats just me $20 is no where near the cost of a motor.

 

[jk20z3]

yeah that's for sure thanks man i will stop by Auto zone sometime this week and btw what is the oil pressure level supposed to be at for a k20z3?

 

[PatCtr]

i dont know i have a modified oil pump so mines is higher then stock. on cold start its 100psi until warm and chills around 50ish lmao

 

[vietsol]

So i'm guessing i'm just going to have to get kpro to fix the problem . At least the price went down !!!

Get a speed converter. That way you're speed will read on both the ECU and your speedo guage.
One example:
http://www.hybrid-racing.com/store/hr-05-06-speed-conveter-box.html

Or just bite the bullet for Kpro

 

[jk20z3]

well i was planing on getting a S2000 cluster. I saw on here there was something you could use at radio shack for $5.00 to convert the frequency on the vss . but it would only work on kpro .

 

[vietsol]

http://www.k20a.org/forum/showthread.php?t=93609

 

[jk20z3]

Yeah thats the thread I was talking about really want to try that out.