RX7withNitrous

Well i called the guy that's working on my car the other day. He was putting my fuel pressure regulator on and doing some starter work for me. He said he took it up to 140mph and it didn't stutter at all and he said it felt really strong. He took out my s-afc though said that i didn't need the unit. whatever works i guess im going to pick it up today.

den

what did it used to do under 140mph before you got it fixed? just at the moment i get bad hesitations at 115-120 in fourth gear. anyway, glad to hear you get it back today - have fun !

RX7withNitrous

well like the last few months under hard acceleration it would just kind of stutter and backfire. I was going nut i had upgraded everything except the fpr and a buddy said i should try it. It had gotten so bad that it wouldn't let me rev the engine past like 4 in neutral or it would die. Crazy rotaries.

den

not sure what my problem is yet but it could be fuel related. as soon as i hit about 6800 rpm in any gear it just hesitates, feels like fuel cut but the boost is going down at that point. crazy rotaries just about sums it up - lol

RX7withNitrous

well do you have a fcd? What are your mods?

den

appologies, yeah i have the greddy fcd, mbc set @ 10psi, safc, walbro pump and blitz intake. sometimes it spikes to 11 but only when i push it hard in 4th gear. i still have both cats for now as i've not ported the wastegate yet. i was going to start by checking for vac leaks then check the voltage at the fuel pump.