Is anyone else having trouble with their secondary turbo control with the AEM?

With the default settings of ls3=2800, hs3=3200, ls1=3000 the second Turbo is coming on pretty early. I see 12psi but by 5000rpms its down to like 4psi. I've played with the settings but no matter what I do it keeps falling off. I pop the stock ecu in and it runs great. I get 12, 10, 12 all day long. Are these the only 3 switches for turbo control. I posted on the AEM bbs and from speaking with someone else it seems like maybe only one of the turbos is working and it's just running out of steam.

Any thoughts?

 

Update. I'm told now that I should play with the PW2 settings because they are by default set to off. Does this make sense to anyone else? Anyone have any idea what a good start would be with these settings and which specific PW2 settings? There are a ton of them.

Why would they ship these settings off by default. I thought this was supposed to be setup for a stock 7.

 

That's an interesting question. The dyno graph they have from the car they tuned with is definately still sequential, if I recall.

I've asked if that's the map we have, the one specifically from that car and that dyno run, but got no answer.

I'm wondering if maybe we actually got a much earlier version of the map that's maybe only good for idle and cruising.

I don't have the twins anymore, or I'd be following this more closely. Seems like there's at least a half dozen other RX-7's that are online in either this forum or that forum running this box, but they're not nearly have vociferous as the PowerFC crowd has been.

 

Well, I expected to have to do some tuning to get it perfect but I also expected it to function pretty close to stock right out of the box. I also thought that we'd be getting the same map that was use on their test car. I am pretty confused as to why they would ship with turbo control off for a twin turbo car.

They went through all the trouble to tune their test car and dyno it. Why wouldn't they ship the same map?

I plan on going single this summer so I haven't been super concerned about it. I've been popping it in here and there and trying to learn how to tune it but whenever I want to really drive the car I have to put the stock ecu back in.

I'm forcing myself to keep it in now and learn how to use it so I'll be prepared to really use it when I do the single conversion. I certainly don't want to wait until then to start learning.

I guess I was hoping that someone out there had a map that works well with the stock twins or at least have some idea of what I need to do to tune them right.

It seemed like there was such a huge demand for this thing to be released and now it seems like no one is using it.

I guess I just need to call them and see if they can help me get it running right. I'll post an update as soon as I've got something.

So from the response I guess I can assume that there is no one else out there with this unit running stock twins successfully?

 

Guys, PW2 is the BOOST Controller, not the sequential controller. Have you even looked at the manual? The map provided is the same as the on listed with the dyno curve, even says so on the post (Base map). It makes perfect sense as to why they would turn down the boost for shipment, why would they want to add to the risk of you blowing up your engine becuase you went out racing without tuning?

 

Yes, I read the manual. Yes, I know PW2 is the boost control. Mine is set to "OFF" not down. So it's obviously not the same map. If it is then, how did they get that curve with no boost control? I am currently using the .94 map but I have had the same problem since day one with the .84 map.

Did you have anything useful to add?

 

Sorry, but you can't turn boost off, unless you take off the turbocharger. Down and off net the same result (less boost). Minimum pressure on the factory waste gate is 7 psi. It is still the same map, they just turned the boost down. If you read the manual, my guess is you read the part about boost control. If so, then adjust it.

 

I understand what you're saying but reading the manual and understanding what to change are two different things. I have read the section on boost control several times and I still don't understand which settings to change. Here's the process it says to follow:

·Open AEMPro and connect to the EMS
·Confirm that the throttle position is set properly (closed < 1%, WOT > 95%)
·Confirm the AFR or that the vehicle has sufficient fuel for boosting.
·Open Options/Boost Control and set WG/Idle PW TPS to 10%.
·If using the 3 way GM solenoid, set WG PW to 3, WG PW*256 to On, WG Duty max to 84.38%, and WG Duty min to 10.16%.
·Set the boosted section of the Wastegate Duty Map to 50%.
·Set your boost target in the Boost Target VSS table and/or the Boost Target Thrott map.
·Log your Boost and WG parameters, ie: Boost Target, WG Duty Out, etc.
·From the log, the proper open loop wastegate duty can be determined.
·After the appropriate wastegate duty is found, the wastegate feedback (error control and/or P+I) can be enabled.

I don't even have an "options/boost control".

All I want is a map that works properly with a stock car. Why is that so much to ask for?