Anyone Else's MM do this?

[Blackened300a]

My MM has 4.10 gears, PHP cold air induction,PHP intake spacer, Steeda Pulleys, 180 temp stat,Denso plugs, and a SCT tune from DR. At WOT the engine screams and pulls hard to about 50-55 mph where it then shifts to second gear and Falls flat on its face!! It stops pulling as hard and seems to crawl up to 80mph, However, Take off at 3/4 throttle, and the car pulls steady and strong all the way up to 100mph. I have noticed this after the PHP intake spacer install but Not sure if I should remove it until im sure its the problem. I also havent had the car on a dyno yet so Im not sure if improper tuning is my problem. I have no pinging or detonation so Im pretty sure its running correctly.
Thanks for any help and info

[SergntMac]

Check with Dennis, it's a problem I had a while back. I can't explain it techically, it's got something to do with the EEC commands not giving the tranny time to react correctly. There is a fix for it.

[Blackened300a]

Check with Dennis, it's a problem I had a while back. I can't explain it techically, it's got something to do with the EEC commands not giving the tranny time to react correctly. There is a fix for it.
Thank you very Much, I shall place a call to him tomorrow!

[Directedby]

same thing happened to me when i installed 3000 torque converter and PHP intake spacer. dennis sent me a new SCT program.

[blackf0rk]

I have that problem occasionally too - I'm hoping it will be fixed when I get my Trilogy ;)