boosted Miata dies, often.
 

So every time my brother calls me, he starts by telling me that my Miata died on the road. I'm in the Marines so he calls 2 or 3 times a week and every time the same ol story. Hes going to change the fluid, spark plugs and wires, but if thats not what it needs... then whats next? he said the boost spiked up to almost 20 lbs once (according to the random boost gauge) any thoughts? pics of the motor in a few.

more details about setup, are you running ebc, or manual. ms? Does your brother know anything about cars? i think your problem is either A a boost control problem which caused you to blow a coupler off the charge piping causing a power loss if your on a stock computer, or using the maf still. or B your brother needs to be nowhere near your car and changed something and messed it up.

hes a smart kid. Maybe not really a kid anymore hes 21 so not be. he is a pretty smart kid and slightly car smart. he said it has idol problems, smells of gas when it sputters out.

All this info came from the seller, i just got it this month.

This is 1996 mazda miata m edition it has the 1.8l 4cyc, 5 speed tras, limited slip rear diff
It has a custom top mount turbo kit
header is custom made for the Td05 14b and evo3 housing runs to a 2.5in down pipe to a 3in straight pipe
front mount intercooler and 450cc injectors
all this is controlled by AeM Fic piggy back, laptop tuned and innvative wide band o2
it has aluminium radaitor and coolant reroute 160f thermastate to ensure it can hold up in 100f temps
adj dual stage boot controller set at 9psi street and 15psi strip flip of switch
adj fuel pressure reg

https://www.miataforumz.com/attachme...ine=1327193770

data logging?
PS: going to move to the turbo section

If it is logging i wont know for a little. my brother is still trying to get the software to check and tune. Ok yeah, i was not sure if it went in the turbo section, mostly cuz i didn't know if it was a turbo issue or something else. Thanks.

Also, with those 450cc injectors, can i bump that turbo up to a tdo5 16g with little issue? or would it be not worth it?

im not the person to ask about this, i dont see why not, start at lower boost and work your way up will probably end up at a lower number. im not a tuning person im just trying to help the guys who know alot about it with some of the basics.

Yeah, I'm just now learning the boost world, I have had a few turbo cars, but they always had factory turbos so it was easy to deal with. (factory warranted...) But thanks for any and all help, I'm trying to get a crash course before I deploy next Friday so I can hopefully get some kinda resolve.

ask your question on miataturbo.net they're more people over there wiht more knowledge then myself.

If you ask this over on MT.net, you'll get yelled at for using a crappy piggyback. Just an FYI.

My advice will be the same as you'll get over to MT: Ditch the piggyback, get a megasquirt, go standalone and actually tune.