i have a SAFC installed in my car and it has been running fine up til this morning.
when i keep the throttle easy it runs great accelerates all the way through the rpms but when i give it full throttle around 3k-4k it "jumps" seems like a huge loss of power or something and then does it again 4k-5k if i stay heavy on the throttle and so on. what could the problem be? bad secondarys? bad tps?

 

someone help please?

 

i dont have an rx7 but i do have a boosted subaru. Could be a boost leak. Or you could have clogged fuel injectors, or you could be boosting so much that you dont have the fuel to support it.

 

I would say check your grounds, although they wouldn't be the cause of the hesitation at 5K.........

 

its a street ported NA, could the problem b it is running too rich?

 

Don't think so or you'd be bogging down all the way up. Do you know what your set at on your SAFC at those RPMs?

 

well its like once it picks up the throttle it get really bogged i leaned it out alittle bit on the safc and it helped alot im getting alittle bump around 3500k but it picks right back up

 

DO you know for sure that your grounds are good? This sounds a lot like the 3800 hesitation. Search that phrase and you'll see. I actually had it a bit, but got rid of it after running another wire from the tranny to the firewall.

 

grounds are all good i checked them all. i dont think its the 3800rpm hesitation because it sorta bucks at like 4k and seems like it fixes it self then bucks again around 4.5-5k and so on, and this all happens at WOT, if i lay low on the throttle it goes through the rpms fine. not sure if its my secondary injectors but id like to get it figured out

 

5-6th port actuators could be sticking. could only be one and it will cause i big loss in power. trust me i know. they open at 3800 with the secondaries