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Wont go to rev limiter above 7k

Posted: Fri Dec 07, 2012 2:49 pm
by Bvillarreal
I dont know if it is something in the tune or mechanically, but when the rev limit is set anywhere above 7000 rpms it does not engage a rev limit it just feels like it drops off. I do not have my wideband connected to my s300 so i cannot provide a datalog but here is my tune and a video. Fully built LS/Vtec 15 psi RC 650cc, garrett gt30. Using NGK BKR7E

This is a video where my rev limit was set to 7800. as you can see it doesnt wanna go there


http://www.youtube.com/watch?v=JRv33tuOMDU

Re: Wont go to rev limiter above 7k

Posted: Sun Dec 09, 2012 11:03 am
by Bvillarreal
Any help is useful

Re: Wont go to rev limiter above 7k

Posted: Sun Dec 09, 2012 1:14 pm
by crucian
Bvillarreal wrote:Any help is useful
What are your spark plugs gaped to? What type of ignition are you running?

Re: Wont go to rev limiter above 7k

Posted: Sun Dec 09, 2012 6:12 pm
by Bvillarreal
Ngk 8s gapped to 25, stock ignition. I've tried ngk 7s also and nothing, I've also tried gaping at 28 &30

Re: Wont go to rev limiter above 7k

Posted: Mon Dec 10, 2012 10:29 am
by Spunkster
You need to post a datalog showing the problem.

Re: Wont go to rev limiter above 7k

Posted: Mon Dec 10, 2012 11:17 am
by Bvillarreal
I don't have my wideband hooked to the s300..

Re: Wont go to rev limiter above 7k

Posted: Mon Dec 10, 2012 11:37 am
by Spunkster
You can still datalog.

Re: Wont go to rev limiter above 7k

Posted: Tue Dec 11, 2012 3:19 am
by dworksgarage
i'm having this problem on my b16a as well. It won't rev over 7500rpm. Any idea?

Thanks

Re: Wont go to rev limiter above 7k

Posted: Tue Dec 11, 2012 10:14 am
by Bvillarreal
I will post a log after work spunkster

Re: Wont go to rev limiter above 7k

Posted: Wed Dec 12, 2012 6:28 am
by ONGDATA
maybe its the boost cut bro

Re: Wont go to rev limiter above 7k

Posted: Wed Dec 12, 2012 11:24 am
by Bvillarreal
Feels nothing like a boost cut though. If it were it wouldn't only do it above 7k?

Re: Wont go to rev limiter above 7k

Posted: Fri Dec 28, 2012 7:49 pm
by crucian
Is the engine breaking up when it tries to go over 7k? or is it just shutting down?