help? engine breaks up when in boost

[Skadaloz]

just got done swapping in a jdm 7mgte motor, everything is fine but when i go to boost it it just breaks up like it just hit a brick wall...it wasnt doing it the 1st couple time i boosted it but now it does...also getin code 51 and the light next to the temp gauge(looks like a building), what is it it stays on...
is it leaking boost? any help would help

 

[kamikazemkiii]

thats what it sounds like
does black smoke come out?

 

[suprahero]

You've probably blown off an intercooler pipe or hose. The building is actually a radiator and you're low on coolant.
Make sure to check all of your couplings and vacuum lines. You may have something wrong with your TPS causing the code 51.

 

[Skadaloz]

lock it up...fixed it...my lower intercooler coupler blew and the light went out since i added more coolant in

 

[suprahero]

Good deal Lucille.