rev limit change...
 

recently i'd gone to the local tune shop to get a new intake put in ( the apexi one) and the adapter didn't come in the box and the dude had it all taken out and he had to put it back in you think that could be the problem... ever since then when i hit 5k rpm it stops and all i hear is the turbo and a high rev.

87 rx7 turbo 2