Acts like it has a 4500rpm rev limiter

So, you never solved your cut out problem? The ImportDirect sensor I have is still a suspect.

 

What ignition coils are you using?

 

I think they are OE - never been replaced. Toyota/Denso

 

Maybe slap some new MSD ignition coils onto it

 

Coils are plug wires are relatively new. Less than 50K on them. They are OEM.

Ah, no.

 

I hear you, it is a concern. I bought mine with a dirty MAF and it was similar.

 

I'm waiting on the Toyota/Denso parts I ordered from Rock auto yesterday. Plugs, wires/boots, coil packs and a Denso crank sensor. I will clean the MAF today.
See if that makes a difference. If not, then I will change one thing at a time, so I will know who the culprit is. Hopefully, one, or all of these things in combination will fix this.
Thanks

 

For anyone interested: I cleaned the MAF and throttle body today. It may run a little better, but cutout problem is still there. Waiting on other parts to install.

 

Did you resolve the issue? Currently having the same problem with mine.

 

Mines a '98. Before I had to store it for a year or so, I had no problem hitting 6+. But once I pulled it outta storage, it has the same issue. I've tried a new crankshaft position sensor. No love there. I've cleaned my MAF. Again, no love. Any help would be soooo helpful.