Rb25det will not rev past 4.5krpm, Noone can figure it out!

[Spooly240]

Ik ik… I have googled and tried different remote tuners to look at the maps to see if they can spot an issue because I cannot find a physical issue, even Haltech looked at them, AFR’s are good everything is acting as it should supposedly. I’ve spent over a year trying to dissect this problem and countless nights. This car WILL NOT rev over 4.5krpm. I just want to finally drive my car. Everything that could be replaced, has been replaced atleast twice. Coils are new and been swapped twice, the CAS is brand new, injectors are new and fuel system is full AN with no leaks and steady pressure. Fuel pump is ran on its own relayed circuit, steady voltage. I have tried 2 separate new map sensors. All protective measures have been turned off in the ecu as well so there is no limiters to hit… Ect ect. You name it, it’s probably been gone over.    What Am I Missing!! 
 

-Haltech platinum pnp, onboard map or Haltech 3 bar(have both), full 3in exhaust, pulsar gtx3076r, 1000cc id injectors, aeromotive afpr, fmic, ffi manifold, 44mm watergate, Haltech boost solenoid….All the standard stuff… 
 

pretty average setup. Please help

Edited March 4, 2024 by Spooly240
Added details

[GTSBoy]

Boost rag. Blocked cat. Shitty lifters. Cam timing wrong. CAS in the wrong spot somehow. Cursed by a wandering gypsie, built on a pet cemetary, etc.

[morboost]

does your speedo work?

is anit lag tuned on?

[The Bogan]

Valet mode? Do you have a aftermarket alarm

Does your ECU have valet mode?

I know some cars and alarms have them and you need to do some switch toggling to activate and deactivate 

If you do have an alarm google the brand and look for how to activate and deactivate it

Or, as stated above, Cursed by a wandering gypsie, built on a pet cemetary, etc.

 

[Spooly240]

@GTSBoy All the above you mentioned have been checked. Me and a couple others went through the timing a few times and no issues with mechanical or ignition timing, the exhaust is straight through, no cat. Ive set and checked timing of the CAS a handful of times ik the cas can’t be out or the car wouldn’t run at all. The car runs perfecctttt, except right in that 4500rpm zone

@morboost speedo is no longer in the car, I’m running a powertune digital dash, and all anti lag and other features are all off.

@The Bogan I believe the Haltech platinum pro does not have valet. I mean you could technically run a switch to switch between tunes but none of that has been done. Also no alarm is in the car at the moment. 

[TurboTapin]

What happens exactly when you hit 4500rpm? What are your VCT rpm setpoints? 

Edited March 4, 2024 by TurboTapin

[Spooly240]

@TurboTapin vct is shut off currently

[Murray_Calavera]

I would also like to know what happens when you hit 4500rpm.

Can you load the haltech base map and give the car a rev in neutral and let us know what happens.

[morboost]

so this is going to be next to impossible to diagnose over the internet

engines need air, fuel and spark to run. If you are confident that these are working as should and there is nothing in the tune wrong, then it must be a wiring issue.