Blitz boost controller giving problems!!

[91talonontsi]

This isn't a problem with my car.. but it is a problem with my buddies car. And sence i do his work for him is turned into my problem. Anyway my friend just bought a 99 GSX with not much done to it but for a intake, BOV, and a blitz boost controller. I don't like the blitz boost controller first of all because everthing is metric. Also you can't set a real PSI to set it to.. You can only set it to a ratio. 0 is stock, and 100 is the turbo's full ratio. We set the boost controller at 70 and did a second gear pull.. and for some reason right when it reached 5,000rpm it jerks really hard (almost like a fuel cut out). It could be a fuel cut out but im not sure. But he also blew a valve cover gasket to. We tried this again and turned it down to 30. Again the same thing happen. Then I turned it to 0, that should be stock. Again the some thing happen. So then we just unpluged the boost controller completly and it finally stoped doing that.

But it kinda scares me that it was doing this. Just because i have no clue what it is. So does anyone have a clue?

 

[kottyking]

This isn't a problem with my car.. but it is a problem with my buddies car. And sence i do his work for him is turned into my problem. Anyway my friend just bought a 99 GSX with not much done to it but for a intake, BOV, and a blitz boost controller. I don't like the blitz boost controller first of all because everthing is metric. Also you can't set a real PSI to set it to.. You can only set it to a ratio. 0 is stock, and 100 is the turbo's full ratio. We set the boost controller at 70 and did a second gear pull.. and for some reason right when it reached 5,000rpm it jerks really hard (almost like a fuel cut out). It could be a fuel cut out but im not sure. But he also blew a valve cover gasket to. We tried this again and turned it down to 30. Again the same thing happen. Then I turned it to 0, that should be stock. Again the some thing happen. So then we just unpluged the boost controller completly and it finally stoped doing that.

But it kinda scares me that it was doing this. Just because i have no clue what it is. So does anyone have a clue?

Well Im not familiar w/ that brand of boost controller but... You failed to mention if he has a boost guage. If he doesn't why are you messing w/ the boost?? Definately sounds like fuel cut, who nows how much boost he was running and you probably cut out. Another mod he should get soon is a bigger fuel pump as well depending on what your raising the boost to.

 

[91talonontsi]

Ok so these cars do have a fuel cut. I just wasn't sure. I never have had a turbo DSM. So i don't know much about it. And no he doesn't have a boost gauge. I am telling him to get one but he will not get one. He did something stupid because he bought the car with a little bit of a loan from his parents. So ever penny goes to his parents and he can't even cough up $50 for a boost gauge. I think that was the stupidest thing he could have ever done. And the only reason I started messing with the boost controller was because the car was doing this jolting when he first bought it last week. So i was trying to get the car to stop doing that.

 

[kottyking]

Ok so these cars do have a fuel cut. I just wasn't sure. I never have had a turbo DSM. So i don't know much about it. And no he doesn't have a boost gauge. I am telling him to get one but he will not get one. He did something stupid because he bought the car with a little bit of a loan from his parents. So ever penny goes to his parents and he can't even cough up $50 for a boost gauge. I think that was the stupidest thing he could have ever done. And the only reason I started messing with the boost controller was because the car was doing this jolting when he first bought it last week. So i was trying to get the car to stop doing that.

Yes the cars sure as hell have fuel cut and youll notice too. HE NEEDS A BOOST GUAGE. The one in the car isnt accurate worth a damn. ANYTIME YOU MESS W/ BOOST HAVE A GUAGE NO MATTER WHAT. Also if its a 2g, they have a crappy blow off valve that leaks at like 13 psi. So if he wants to safely raise the boost on a 2g, he needs walbro 190 fuel pump, a blow off valve (a 1g bov would be fine), and a boost guage. If not we dont wanna hear about how his motor is ####ed up in a different post.

 

[91talonontsi]

Ok yeah i know that he needs a boost gauge bad. He already has a BOV so that is not a problem.. And if he blows his motor you are not going to hear about it because its not going to be my problem.. I have told him what to do so if he doesn't listen to me that is his problem.
Thanks for your help guys.

 

[EvolvingGST]

This isn't a problem with my car.. but it is a problem with my buddies car. And sence i do his work for him is turned into my problem. Anyway my friend just bought a 99 GSX with not much done to it but for a intake, BOV, and a blitz boost controller. I don't like the blitz boost controller first of all because everthing is metric. Also you can't set a real PSI to set it to.. You can only set it to a ratio. 0 is stock, and 100 is the turbo's full ratio. We set the boost controller at 70 and did a second gear pull.. and for some reason right when it reached 5,000rpm it jerks really hard (almost like a fuel cut out). It could be a fuel cut out but im not sure. But he also blew a valve cover gasket to. We tried this again and turned it down to 30. Again the same thing happen. Then I turned it to 0, that should be stock. Again the some thing happen. So then we just unpluged the boost controller completly and it finally stoped doing that.

But it kinda scares me that it was doing this. Just because i have no clue what it is. So does anyone have a clue?

0 does not mean back to stock. 0 means 0 PSI. So you were probably flooding the engine with gas so thats why it acted wierd. Now with that said.... 1 bar = 14. something PSI... Go look it up and do a table like me and stop bitching about not being able to read metric. Get a boost gauge... and well thats life.

Tell him he needs a boost gauge, a bov, to get a real tuner and dyno tune.

Now stop messing with things you have no idea what they do.

 

[TURB0]

0 does not mean back to stock. 0 means 0 PSI..

Not to hijack the thread, but can you really run 0 psi? Wouldn't it just be as low as the wastegate would allow? Im just curious.

 

[BaddAssGst]

0 does not mean back to stock. 0 means 0 PSI. So you were probably flooding the engine with gas so thats why it acted wierd. Now with that said.... 1 bar = 14. something PSI... Go look it up and do a table like me and stop bitching about not being able to read metric. Get a boost gauge... and well thats life.

Tell him he needs a boost gauge, a bov, to get a real tuner and dyno tune.

Now stop messing with things you have no idea what they do.

Please don't respond if you have no idea what your talking about and have never used a Blitz controller. Zero doesn't mean 0 psi. If that's the case, since mine is set to 65, does that mean I'm running Shep boost? I don't think so. Get a clue.

It's very confusing to understand it. I have one and it's still confusing on how to set it. Like everyone else said, it's best to get a boost gauge and then play with what ratio to set it at. The built in boost gauge is not accurate at all. You can also mess around with the peak setting so if it gets over that certain "ratio", you get a noise to alert you.

 

[BaddAssGst]

Not to hijack the thread, but can you really run 0 psi? Wouldn't it just be as low as the wastegate would allow? Im just curious.

And to answer this question, no you can't run zero boost by setting it all the way to zero or completely backing out your boost controller. It doesn't work that way.

 

[darren0828]

Are you using SBC id??
If yes, than you dont really need boost gauge.

When you set the boost to 0, you are setting the boost to wastegate spring rate setting, you can set the display value to psi that I am very sure because I have setup that way.
Make sure the wastegate setting is at AC not WG. WG is for external wastegate
My value used is boost 58 gain 10 for boost up to 21 psi for MHI evo-16g
other than that i dont know what is wrong because i didnt see what happen. sorry!!