Here we go again..
 

watch the video plz, i dont know how else to explain my problem. this is a s5 bridge ported. RB exhaust, everything else stock. i think it might be fuel but sometimes the temp gauge drops when it starts hesitating



http://www.youtube.com/watch?v=0ip9N...1&feature=plcp

i'm not sure why you expect a stock ecu and a bridgeport to run.... is there a check engine light? if yes, what code?

i bought it like this i didnt make it. this is my dd i dont race it at all. just want to get rid of the problem. no there is no check engine light

you wanna get rid of it you say?

get rid of your car. you got an rx7 that has a RACE PORT on it DESIGNED for ONLY RACING in a STOCK car with STOCK ecu.

figure it out.

where is the hesitation? do you drive your dd like this every day?

What size secondary injectors are in it?

Like other said, stock setup was not designed to run that port style. If you want it to run well you need a standalone or put a stock or street ported engine in there.

My thought exactly. If you DO drive it like this EVERY day, it wont be your DD for long.

injectors are stock also. i thought about changing the fuel pump and filter and see what happen.

i dont drive it like this every day this was for the purpose of this thread. dont you guys have common sense.

listen careful when it reaches 6k

so you are saying that every time you run into a problem with your car you just get rid of it. i dont want to get rid of the car i just want to fix it. i noticed the problem when i was driving with a friend and decided to race him.

I think he's saying its not the smartest idea to race your daily driver. But I don't want to see this turn into a hate thread...

is that ignition breakup?

sorry i dont know what you mean. can you please elaborate

your ignition is breaking up.


elaborated

no hate at all:lol:. i understand dd are just that most of the times, just want to find out what the cause of this problem is. :scratch:

your problem is that you have too much engine, and not enough of everything else.

did the car drive normally before this race?

:lol: got it. i bought it with a msd box and use to do it but not as bad. so i think is an electrical problem and fuel. where do think i should start.
coils?
i opened the cas cap and everything looks good. i didnt see any sign of electricity jumping

it sounds like ignition breakup to me check your timing.

the car drives normal just cant rev past 6k. and before this race i never drove it hard. i drive it like any other car. i am about to get a second car the next month or so.

so i am thinking about buying the rtek7 chip, new fuel pump and filter. this weekend im going to change the coils with t2 coils see if it makes any difference.

a local guy gave me his info to call him so he can check it out. i am going to call him see what he has to say

im running a ported s4 on stock ecu. but i have a safc and 550 secondaries a little bit of tuning and some extra fuel goes a long way. i have had almost the exact same thing checked my timing and sure enough it was out fixed it and revs perfect ever since. just my opinion it is a sports car its built to be driven dont be afraid to actually drive it. a redline a day keeps the rebuild away!!!

my88vert exactly which style of port are you running?

Just for shits.. Pull 4 degrees from your timing and see what happens.

ya it sounds like your timing or ignition, once you get both of those checked out tell us what you find

First you need to find out if its leaning out. Or Running rich. That way you will know 100% that its a fuel problem leaning out. And not a coil pack issue. Or swap out maf sensor. See if that changes anything. Not likely

There must be someone experienced in bridgeport rotary tuning near your area. Have you tried to find one? A hour of dyno tuning and advice is about $150-$175. At the very least you will get a dyno sheet and a wideband readout of your air/fuel ratio.

Another observation is your fuel tank gauge is either broke or you did that run without much fuel. It's possible the pump was picking up air and starving. I can not tell from the video if that was the sound of a lean running engine at higher rpms.

Rewiring the fuel pump can't hurt.

no we are saying the stock ecu is meant for a stock engine and expecting it to run a bridgeport isn't very realistic.

it needs to be tuned, you probably need more fuel, timing probably isn't right for a BP either.

I am going to take it to a dyno probably this weekend. depending on how much they charge ill run it and find out what the problem is.

i got someone that is coming to check it out this weekend. ill let you guys know