I just got my head back from the shop n got everything put on. Figured I would buy a turbo kit. I got a gt35r with a custom manifold, tial 38mm waste, greddy bov, and ect... well I don't have a tune yet but I have a 8 pound spring with a turbo xs. Mbc and its set all the way down and I'm still over boosting to around 12 to 15psi. N if I stay on the gas it acts like a fuel cut off??? This makes no since to me at all. Any tips on what to do.

 

you're hitting boost cut. what the hell are you doing boosting untuned anyway? goodbye motor...

 

It's tuned all motor and I'm going to a local shop today to get tune for my new setup I was just looking for some feedback on how I could fix the problem myself

 

You would not have much of an issue with "Vapor lock" because you do not have a carbureted engine. A vapor lock is more likely to develop when the vehicle is in traffic because the under-hood temperature tends to rise. A vapor lock can also develop when the engine is stopped while hot and the vehicle is parked for a short period. The fuel in the line near the engine does not move and can thus heat up sufficiently to form a vapor lock. The problem is more likely in hot weather or high altitude in either case.

There are cases in which it does occur in fuel injected engines, but not nearly as likely.

 

GET IT TUNED !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Why on earth do people think its ok to hit any boost untuned let alone 12-15 psi. car probably has stock injectors and fuel pump too

 

Actually I'm not trying to push 12 to 15 its over boosting...... I'm trying to only run 8 and I have 750cc RC injectors and a walbro 255 pump

 

Wow... this makes no sense to you because you obviously have NO sense. Get the car tuned before you put it into boost. Jeez.

 

Ok well I'm new to all this turbo stuff so no need to flame me I'm just asking questions. I guess ill just ask the shop what I have to do then

 

Yea not to bash bud, but you need to get it tuned. Even minor changes i never feel safe to go into any boost without a tune. Trust me dont learn the hard way like many have. From the looks of it you said it was tuned all motor then you got a turbo kit and just put big injectors in?? Thats a big turbo as well. I wouldnt hit 1psi till you get it tuned.

What is youre management?

 

I have s200 and only reason I got that turbo is because I was told I would be able to run it after I got all my head work done. I do have a smaller turbonetics 50cold n 63hot I just have to get different pipes and I can use that one but my plan is to have my shop build the rest of the motor

 

hopefully you havent already done too much damage. 12-15psi with a all-motor tune and just throwing in biger injectors without making any changes to the tune gives me shivers.

Its fine man everyone has to learn. Just talk to youre tuner, you need to make a tuning appointment. He will know best (i hope). Make sure its someone with a good reputation that has a dyno. Don't let youre friend do anything who thinks he knows what he's doing on a street tune. Take it too the dyno. Everyone has to learn but trust me dont go into any boost not even 1psi till it gets on the dyno. You dont want to learn the hard way, although 12-15psi on a all motor tune could have gotten you there

 

The headwork has nothing to do with what turbo you can run. If anything that would be youre block.....ALot of people run nearly stock head's with 700+hp. Youre block is youre limiting factor, if its forged internals youre good to 400 with a good tune. after that i always recommend getting the motor sleeved. IF youre using E85 you can go over 400 safely. i still say too sleeve for insurance but budget also comes into play here and youre goals as well.

IF using the s200 and just adding injector from a 240cc injector you at minimum need to change the fuel parameters within the software to 750cc. i wouldnt even drive the car without those changes. Just tow the car too the tuner and hopefully you havent done much damage

And turbo size all comes down to youre goals with the car, nothing to do with headwork.

YOure goals will determine what upgrades are needed to achieve youre desired power output

 

Ok thanks for the tips n I got my appt already set today n its a good place. It's King motorsports

 

There you go let us know how u make out.....Dont listen when someone just tells you something they think is right. Come on here ask questions, do youre own research and listen too youre tuner. There is so much misunderstanding that you need to do youre own research.

 

Are you using the stock MAP sensor?

 

LOL @ Vapor lock

 

I wouldnt even start the car after putting big injectors in and not making any adjustments

 

What turbo manifold do u have?? Alot if the eBay knock offs have probs with the WG tube. And sometimes the Lil 38mm WG have a hard time regulating the bigger turbos at lower boost like ur trying to achieve.

 

This ^

and that! ^

Hahaha, man I haven't heard the term vapor lock in years... like 15 years lol! That took me waaay back to the entire reason my older brother sold his mint, built motor, dual Weber carbed 74 Super Beetle! SMFH :/ Oh how I wish I could have bought the car from him at the time. It originally belonged to my Grandfather and was built by my Uncle (VW tuner at heart!) before Pops sold it or handed it down (not sure which) to my brother. As a kid, Pops would open the sunroof and let me stand on the passenger seat to poke my head out of the sunroof while he cruised slowly around our neighborhood. Good times! And he always made it a point to pop the hood and let me check the oil. No doubt I inherited my wrench skills from Pops. R.I.P. my man. That Bug was so nice, but left my bro stranded <--- vapor locked lol ---> more often than he could deal with so he sold it instead of learning how to tweak the Webers for FL. heat! I kill you, bro!

Oh hi tech forum! I was going to mention the stock map sensor also. But now you're getting tuned by a tuner that hopefully knows how much boost the stock map will read, if that's what you're equipped with. Thanks for sparking my trip down vapor locked lane and good luck with the tune!

 

Well after getting tuned everything was fixed and I'm now at 15 pounds boost. They all laughed at me when I told them of the problem I thought I had but I'm new to this stuff I just buy parts n tell them to put it in. LOL anyways I bought some pistons n rods and they sleeved my block for me and now I made 378 on the dyno on pump gas. I'm happy for now but they said that I'm going to have redo my tranny sold to handle the power so that my next project. Thanks for the help guys and sorry for being dumb with my terms on things.

 

So what was it???

 

Map sensor and my vacuum lines were to small and my manifold sucks *** so I bought a ram horn from then and they re ran my lines and everything was fine then I paid for all new JE pistons and eagle rods and sleeves which took them 3 hours to put in then threw it on dyno

 

there's no way they sleeved and reassembled a motor in 3 hours.

 

You got burned.

 

maybe a block guard. but i still doubt that lol.


* nice name BTW

lol theres a few lsturbo's in here