b18b1 with 11-5.1 cr full p+p ubberdata
problem started after i installed crower 404s springs and msd

Ive rechecked valve lash and all wiring.



please help thanks.

 

MSD what?

Could MSD unit have a "programmable" rev limiter?

I don't see how better springs would do anything but increase "possible" RPM. 94

 

6al and i only mentioned the valve springs so nobody thinks that its valve float.

 

if its hitting a limiter, than its in your dist.

If its just floating at 5k, its mechanical.

 

REV LIMITER
6AL, 6ALN, 6BTM: These ignitions are equipped with built-in Adjustable Soft Touch Rev
Controls. MSD Rev Limiters are adjustable with plug-in modules which are available in 100
rpm increments. The Soft Touch circuitry provides a smooth and accurate rev limit by
dropping the spark to individual cylinders. The Soft Touch produces a load-free rev limit
that is within 1% of the selected rpm. 94

 

its not hitting a rev limiter it feels like it. when you free rev the motor it still bogs at 5

 

Saying it bogs down at 5k is a bit of a different story than just not revving past 5k. Check your timing. The MSD would have altered your ignition timing characteristics.

 

>>>>rev limit by dropping the spark to individual cylinders<<<<
Pretty sure that would feel like engine is bogging, have you checked what rev limit is set at on the MSD? 94

 

do you think i need to advance or retard.
rev limit is a 6600 pill i havent uped it yet but i have pulled the chip and no differance.

 

It would likely need to be retarded if the ignition timing is the issue but it should be checked with a timing light. You wouldn't want to make it worse.

 

thanks