I got a Big Race In a few days!!

ok I have a big race coming up with a honda civic EJ 95 coupe with a Jdm D15B LSD and all... I'm packing a 94 cx hatchback powered by a d16z6 i'm think it will be a good race my car is lighter and i rode in his car i don't think the vtec works or it just don't pull hard but it easily revs to 8500RPM mine on the other hand my only revs to 5'500RMP so thats my question.you have hear and feel my vtec kick in but i'm thinking it should at least go to about7,500 - 8,000 RMPs because its like vtec kicks in then i have to shift. if i could rev high i think i can take out the JDM D15b out no problem. i also have a spark plug wire that pops out ever now and then could that stop my car from reving high? plz help my find out why my car doesn't rev high for the sack of all the D16z6 out there..lmao

You should be shifting right at about 7200 if you have a z6.

If he's shifting at 8500 rpms then you should win anyways, because that's pretty far out of his powerband. All he'll be doing is putting unnecessary strain on the engine, not making any more power by doing that.

You should be shifting right at about 7200 if you have a z6.
yeah i should be able to but i'm not... i shift at 5,500 and thats its the car only revs to 5,600 and it top out i need to know why i'm not able to shift at 7,200. is it because of a sencor? ecu? i mean i tryed his ecu str8 from japanon my car it only revs to 4500 then its tops out like it have a rev limiter on it but when he has it in his car it revs to 8,000rpms i just don't get it. when i have my ecu P28 in my car it goes to 5,600 then it cuts out..i just don't know why it can't rev pass 6,000RPMs any ideas

just pick up a cheap nitrous setup for $300 and wax him....lol

Are you throwing any check engine light codes?

Are you throwing any check engine light codes?
no check engine light at all its weird could it be a sensor? or the harness because its cut into? i just don't know. any other questions i can answer?

If you have a spark plug wire comming off that could definetly be your
problem.
A lot of things could cause that though, sounds like your Vtech isn't
kicking in. You may have to have it tested at the dealer on the analyzer.
It could be something simple too, like a fuel filter or restriction in the
exhaust or catalytic converter.
The diagnostics at the dealership can test all of it in minutes.
It costs, but it's the best way.