code 21 with pr3 mugen chipped ecu question
Thread Starter
Joined: Jan 2003
Posts: 28
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From: Renton, WA, USA
code 21 with pr3 mugen chipped ecu question
Is this just from the ecu being chipped or could it be a problem. I also think my tach is off because my vtec engages at 4400 rpms. And the lowest the program engages at 4800 doh 
. Just need some info on that code because i bought a new itr vtec solinoid valve and it didnt fix the code so that was a waste of 130 bucks 
. Thanks guys anything will help.
. Just need some info on that code because i bought a new itr vtec solinoid valve and it didnt fix the code so that was a waste of 130 bucks . Thanks guys anything will help.
Junior Member
Joined: May 2003
Posts: 97
Likes: 0
From: Bay Area, ca, us
Re: code 21 with pr3 mugen chipped ecu question (JdMcRxSi)
Yah i am having the same problem with my teg. Its giving me code 21 and I have the spoon program, but my vtec engages at 4500 instead of 5000. I was thinking that it could be the solenoid because the person who did the swap was sorta ghetto. 
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