6G Celicas Forums

so i raced a mustang today. and got my ass beat:( my car is just not what i know it can be. idon't know what to do. I've tried my best to tune it and its just not working out. when i go off the line my wastegate just opens up and my car bearly moves. but when I'm in third cruising then matt it then it will pull but not what it should be. i still can't get above 5grand rpm. any suggestions?

#1, dont post about street racing on this site, it'll get ya banned.
#2. tuning. you need it. ON A DYNO WHERE ITS SAFE TO DO SO.

how much boost you running?

If your wastegate is opening you are reaching max boost. Having your wastegate open isn't a bad thing, as you're making it sound

Fixed it for ya! haha

idk about your local forums but I know on mine, there's a few guys who are huge into tuning and may help you out..just a thought..

Ya but when my wastegate opens my car stops excelerating and fall's on its face. it doesn't open and continue to pull like it should. and i have no idea why its doing that

But that's not the wastegate's fault, I just want you to realize that. The purpose of the wastegate is to bypass all excess exhaust gases out of your turbo so that they don't spin it any faster making more boost. If you didn't have a wastegate your turbo would never stop producing boost until it died or blew your engine.

As mentioned before, if you're limiting at 5000 RPM it's most probably because you're hitting fuel cut on the stock ECU. You need to clamp the MAP voltage (if you're using the stock MAP sensor) and/or get a 2-bar MAP sensor from an MR2 turbo. You need somebody to set your stuff up for you properly. While a SAFC may work to an extent, it's not ideal for controlling a non-factory turbocharged car.

how do i clamp the map sensor

first off what are you using for a MAP sensor? if you are on the stock sensor, thats going to be a big problem there

You first have to find out if you have a stock MAP sensor or a 3SGTE MAP sensor.

If it's still the stock MAP, you need to get a 3SGTE MAP sensor to run 14PSI of boost or less.

is there a way i can tell by looking at it.

This is a 3sgte MAP sensor:

This is a 5sfe stock MAP sensor:

I believe the main visual difference is the sticker on it (it has a part number on the sticker which you could use to tell which one it is)

Where is this located. because there is nothing that looks like this by the throttle body

it should be mounted to the firewall somewhere behind the intake manifold IIRC.

This post has been edited by Ted95: Apr 9, 2013 - 8:48 AM

i only found one sensor attached to the firewall and it doesn't look anything like the ones in the picture

here it is, its right next to the windshield wiper motor, ignore the black box below it.

ya that's the one i saw but it doesn't look like the one in the pic above. how do i tell if it's.the one for the 3sgte or the 5sfe

get us a picture of it

^^ it doesn't have one of these stickers on it?

This post has been edited by Ted95: Apr 9, 2013 - 11:36 AM

I echo this..I was going to say the same thing..be careful though, running too lean with a turbo will end up overheating your turbo..here is a nice little chart for you, ignore the right two columns. I would try to find out why it started running rich first though.

Ya but none of the numbers are the same is blue tho