Bo-Port Stage 1.5 cam

[tateg]

I just installed the 1.5 cam replacing my A237. Ever since I went MS the ECU has been fighting with the A237 for dominance. Idle was atrocious and vacuum was non-existent. Not to mention that it was hard to get started.

I installed the 1.5 cam and let the engine torn over for a minute or so to prime the cam. Reconnected the coil and it fired right up and I had *instant idle*. *Instant Idle* is like *instant coffee* only better. And I had a steady 16 inches of vacuum. The A234 never had better than 13 and the idle bounced around so much I was grateful for that.

I'm still having an issue with the vacuum and idle when I turn on the AC but I hope that with tuning I'll get it sorted out. Even with this issue it's considerably better then the A237.

Rating: Gotta Have it.
Power Increase: not sure yet but I'll edit this when I know
Manufacturer: Bo-Port
Cost: $350

I haven't tuned the MS for this cam yet so I don't know about the power increase or not, but I've seen dyno sheets from Bo's development that showed that this cam made considerably more power than the A237 and on less boost. That's always a good thing.

[Laredo]

Thanks for the feedback, this cam is on my Christmas wishlist.

[NavySVO]

Guy,

What is your final take on this? I am going to be receiving mine here shortly and I will be using his rollers and HLAs (shimming involved).

[tateg]

It beats the heck out of the a237 or the stock cam. It's a great choice if you want a nearly stock idle. I just don't like the lack of vacuum when I turn on the AC. But that may be due to my tuning with the MS or maybe I have a leak somewhere.

Just make sure to follow his instructions when shimming. It's quite important to get it right.

[BrianO]

is that a roller cam?

[tateg]

Kick your idle speed up 150 or so RPM when the AC clutch is engaged. I trust the MS has that capability?

I'm sure it does but I'm too ignorant to figure it out. I didn't make it myself, I bought it preassembled. I suspect that there would have to be some kind of input to the MS to tell it that the AC was on which would entail me having a sufficient understanding of the circuitry to do the soldering myself. This isn't happening too very soon.

If this was a TC instead of an SVO the connection would already be wired into the harness.

EDIT;
on second thought... If you are referring to the IAC opening to compensate for the RPM loss, then it already does that. It will idle at 1000RPMS regardless of whether the AC is on or not. What I can't make it do is idle at 1150 when the AC is on. I'm sure it's possible, but I don't know how to do it.

[SVOeric]

Why we gotta get into tech in the product review section ?
Now I have to play maid, and clean all this out.