well the title pretty much says it all. i have recently received a 87 na rx7 with blown waterjacket seals.so the guy purchased a s5 t2 m,t,ecu and engine harness.i traded a 91 miata i bought for 500 bucks for this. here lies the question when idleing it runs fines under no load revs fine also. as soon as i start to go down the road i try to acellerate it bogs down then pics up and boosts fine. then the idle starts becomming real erratic.1200-1500 surges. its annying that also i live on military post most speedlimits are 15mph and when i try to hold it steady it drops off picks up drops off picks up ect ect. it wont hold a steady pace but runs fine with accelerating a lilbit. weird.

now for the goodies. its a s4 na chassis with a 91 s5 t2 engine it hass all emmissions removed n333 ecu tb mod s4 na harness. the onlythings left hooked up or not capped are theafm (s4 na) bps (s4 na) tps (s4 na).
i remove everything else those are the only things left being hooked up. now i know that they are the s4 na sensors i know i will need the bps for a s4 t2 but the afm and tps work fine i used those before on another s4 na to s4 t2 conversion i did a while back..twin scroll is removed and all. there are no vacumm leaks and also i removed the s5 omp i premix any help would be greatly appectiated.

i will post some pics as soon as i can figure out how im rotary enthusiest not cpu enclined.. lol
the car was worn and beat to hell but im in the process or redoing the interior blue and silver like my last fc. its comming along but i really need some insight on this issue

 

bump

 

help please

 

on the n/a, unhook ur TPS and see if it runs better... if it does you need new tps

 

i did that and it does run better but it still hesitates just not as bad

 

 

check your timing

 

i did the timng. its good. ima try replacing the tps hopefully that does it. ima also try to get the right bps the one on it is the s4 na