fuel cut?

[josherino]

Hey I just got a new 3in turboback on my 1g with the stock 14b. besides really bad boost creep, I am experiencing jolting and hitting a wall. I still have the stock mas, and it seems to happen in the higher rpm range, could this be fuel cut? Why?

 

[Talesin]

Most likely. You're flowing a lot more air now, with the 3" outpipe. You'll need to bump your fuel system so it can keep up, and either grab a VPC or a MAFT and new MAS. I'd go with the latter, as it flows better anyway, and is only about $100 more expensive, all said and done.

So a 255lph HP Walbro (or similar), an AFPR, possibly 550cc injectors, and some method for tuning your air/fuel.


Before that, boost leak test it.

 

[91-gsx]

or for the time being, what i did was removed the smaller honeycomb on my mas and that will eliminate fuel cut for now, but do what he suggested later if you like.

 

[josherino]

small honey comb is already removed, but all i need it the gm maft for the blow through set up but will that stop fuel cut?

 

[Defiant]

Fuel cut is triggered by too much air coming into the engine, according to what the ECU senses.

 

[Jazzie6044]

along these same lines, if I am logging a run while this happens to my car, I should expect to see a sudden drop to 0 on my o2 volts, right?
I have a real similar setup to the thread starter. now when im running WOT in third, I'll creep up to 17-18psi and hit what I believe is fuel cut

 

[taylor]

Instead of lying to the ecu with an safc, see if you have an eprom, and if you do get it chipped.
http://www.dsmchips.com/

You can just get fuel cut eliminated.