JBrown

so my car has been choking up a bit when i was doing about 75 steady on the high ways it would so down and if i press the gas it does not even try go go any faster and the rpms dont increase does it for about a second not long and then its fine it did it every one and a while i changed my chips and recently put a map sensor and changed spark plugs and has not done it for the week it use to to do it once a day or so while on the high ways. so i assumed it was fixed since it had not done it for about a week and its my daily driver so today on the way from work a car rolled next to me i hit 2nd went into 3rd and it choked on me felt like i tapped the brakes hard for a second it fell on its face. after a second it was driving fine. please help thanks j brown son

lart951

seems like overboost protection, maybe, check your boost line to the Cycling valve and to the wastegate, also inspect your CV

JBrown

i removed my cycling valve and have the LR duel port WG . i also have MBC and have been running 18psi for a while and never happend just started to recently i though i might of had some bad gas or somthing bc the car runs great

951Saga

If you used the Rogue Tuning chip and Map sensor check these two threads for guidance.

Miss-firing / Rich / no idle = Toe home Need help ASAP!

Throttle Position Switch???

Rogue_Ant

Yep.

PM sent.

JBrown

yes it happen with the rouge chips and MAP but it also did it with my other chip and NO map sensor

Paulyy

So it's not the chips. how are all your vacuum lines?

Ben951S

Wow. That OP was two sentences. (with a small one at the end).

Try some caps, punctuation. People will actually be able to read and understand your post better, and will help you.

74goldtarga

I had a very similar problem. My mechanic used some kind of smoke tester to test the vacuum lines and I think it ended up being a loose blow-off valve connection that would pop off a bit and dump boost but was intermittent. Problem went away after this was found. Fortunately it was a cheap fix once found. Good luck

reno808

that was sign. You shouldnt be racing. Does your father know ur racing?

JBrown

thank you for your concern, but i did not know i said anything in my post about racing, and im 20 years old not 16. im sorry guys for the poor grammer i type so fast some times i miss things lol. all im looking for is some help for my problem thnaks

JBrown

all my vacume lines were checked about 2 weeks ago due to a vacume leak and has been fixed

JBrown

and back to the chips my old chip would stutter i dont recall it completey loosing full power or falling on its face as it does w the new ones in

Rogue_Ant

How much boost are you running? It sounds like you are hitting overboost protection...

JBrown

18psi i have been running 18psi for a while and never had a problem idk why it would be overboost protection ?. ever since i had the car i was getting 18psi and cooler days 20psi and never had a problem