I have a ls swapped crx si...... built for boost.... Recently while i was over at my tuners house we were trying to get the numbers right (Can't even get boost readings) as we drive and start to get into about 4lbs the car starts to shake and cut out..... we get some of the base map cleaned up and finally start to hit about 10-12lbs feeling pretty strong but still cutting out.... cant figure it out? We get back to the shop plug into the ecu and setting in N we begin to slowly rev the motor to see what's going on.... at about 1500-1700rpms the car starts surging? I got so pissed of messing with it i finally plug all my oil lines undid the intercooler and put my ls back stock until i could get some advice.... i've done some reading but cant find anyone that has had this type of problem? SOMEONE HELP ME OUT I WANT BOOST!!!! let me know if you need details about the motor intake setup anything..... not sure where else to go????

 

you have no info on setup.
ems? map sensor?

if were to guess, stock map sensor? it is hard to have a low enough boost cut with a stock map sensor.

 

what he said...

also what is your spark plug gap?

 

map is the gm 3 bar....... NGK's gapped at 24-25 set up is b18a1 cp pistons golden eagle rods..... ac cam gears skunk2 intake t3t4 turbo all hooked up to the hondata s300

 

BUMP people come on help me get boosted!

 

are you getting a cel when this happens? you have s300 are you logging while this is happening and going back to see if anything is irregular?

we can only throw darts sorry. there isnt too much to go on.

 

right now we've pretty much got it narrowed down to either the aicv tps or had a bad dizzy..... one guy told me the charge piping was to small.... i since put 3" on and still same problem..... the s300 shows nothing out of place.... just at 1500-1700 rpms it surges....

 

no cel is on during any of this....