2G Help!!!! Fuel Cut @ 4500 RPM

[b00zt3d spyd3r]

i have a 97 spyder gst, 16g turbo big injectors and fuel pump. When I get to about 4500 rpms it does the fuel cut off. Any tuning ideas to fix this?

 

[2gmitsueclipse]

Begin by creating a profile for your car so that members have an idea of what you already have. For instruction, see this thread:

http://www.dsmtuners.com/threads/welcome-to-dsmtuners-now-go-create-a-dsm-profile.499707/


Based on what you have stated, your ecu cannot compensate for your injectors. Again, create a profile with ALL modifications.

 

[b00zt3d spyd3r]

Thanks but in not for sure all the upgrades just bought the car a lil less than a month ago. All I was told was the 16g turbo, and no size on injectors or fuel pump just said high flow pump and injectors

 

[2gmitsueclipse]

How then do you expect us to help you?

You have some homework to do before anyone can help you.

 

[b00zt3d spyd3r]

Just trying to get any input I can. I don't have a whole lot of money to throw at it rigt now. But I made a profile and posted a pic of engine

 

[2gmitsueclipse]

Thank you for beginning a profile for your build. It will be helpful for others to see what modifications you have to provide feedback.

Describe what is going on? What makes you say fuel cut?

Some suggestions to start you off:

• Research more about your fuel injectors and fuel pump.

• Complete a boost leak test (blt). you will find numerous threads about this with the search feature.

• Review this thread about your S-AFC:
  • http://www.dsmtuners.com/threads/how-the-safc-works.105569/

 

[b00zt3d spyd3r]

It runs fine till I get about 4500-5000 rpms then starts kinda sputtering. Anybody I talk to here in town says running too rich at high rpms causing it to cut off fuel.

 

[2gmitsueclipse]

It runs fine till I get about 4500-5000 rpms then starts kinda sputtering. Anybody I talk to here in town says running too rich at high rpms causing it to cut off fuel.

Feel free to read the link below. Then, share your findings with everyone there in town.

http://www.dsmtuners.com/threads/what-is-fuel-cut.186971/

 

[oneslowwdsm]

"everyone in town". You need to do your research like said above. If you have a bigger fuel pump and injectors, you need a tune. Period. DSMLink is your best option. If you don't want to tune it, head to your local yard or we have part outs here weekly with stock parts that you can use for your stock tune.

 

[b00zt3d spyd3r]

I want to get it tuned, got it the best we could with safc-2. I want to get it dyno tuned but there aren't any within less than a hour from my town and don't have $450 to put it on the dyno and $150/hr to tune

 

[lasershark]

Best advice, read the suggested links, find out the size of your injectors and tune it yourself. Safc's are stupid simple and not worth dyno/tune money. That money would be better spent on ecmlink and a self tune. Take it one step at a time and you will be alright. Reading is free and learning saves money...

 

[b00zt3d spyd3r]

I'm trying to learn. This is my first dsm and I haven't been in the car game for almost ten years. Idk what all it has and honestly don't know the difference between bigger or stock injectors just by looking. But I hear the fuel pump loud and clear constantly

 

[inthemidst]

Just loweyour boost by putting the small boost hose direct to the wastegate on the turbo housing.ifits fuel cut this should help.

 

[miliman13]

What size injectors? what liters/ min pump?
What happened?
What changed?
Come on, we were all new once too but you don't seriously expect solutions with no information provided?

 

[b00zt3d spyd3r]

Just loweyour boost by putting the small boost hose direct to the wastegate on the turbo housing.ifits fuel cut this should help.

It has a boost knob controller which way to turn it to bring it down a lil? It's running almost 20lbs before it starts sputtering

 

[mitsubishikid]

At around 18psi+ on a stock or untuned ecu... its not uncommon to hear about fuel cut kicking in, what you should do is a boost leak test, in order to verify you have no leaks.

to make things safer dial your boost down... around 12lbs and see if it still hits fuel cut.

it would be better if all your info on the car was on here... or at the least do some reading on the dsms, and find out what turbo you really are running, and don't take the sellers word as gospel, just cause he said it has a 16g, it doesn't mean thats what your running, the same goes for injectors, and any other allegedly "installed" parts etc.

get the part numbers on the injectors, and turbo and see if they get a hit on this site, more knowledge is power.

 

[b00zt3d spyd3r]

Thanks everyone I'm turning the boost down today and see if that helps

 

[1990TSIAWDTALON]

If it has a "big" pump in it it would need a Adjustable Fuel Regulator to control the bigger pump so you might want to put that on a list.

 

[b00zt3d spyd3r]

If it has a "big" pump in it it would need a Adjustable Fuel Regulator to control the bigger pump so you might want to put that on a list.

Eventually like I said I don't have a lot of cash to throw at it right now

 

[b00zt3d spyd3r]

I did turn the boost down some to about 13 psi and it seems to help, but need to do some tweaking with the safc to account for it

 

[1990TSIAWDTALON]

Good deal, enjoy her!

 

[mitsubishikid]

Here ya go... https://www.youtube.com/user/Jafromobile. watch all of these videos, you might as well do something that will help you understand these cars, while your waiting for your bank account to fill up .

 

[b00zt3d spyd3r]

Here ya go... https://www.youtube.com/user/Jafromobile. watch all of these videos, you might as well do something that will help you understand these cars, while your waiting for your bank account to fill up .

Still don't know about the fuel pump but did find out it has 560cc injectors

 

[Tech4g63]

you need to tune up the car

 

[b00zt3d spyd3r]

you need to tune up the car

That's the next thing I'm working on. All I have rigt now is he safc-2 and all dynos are more than an hour away from me