more boost

[imnike9000]

alright I made myself a mbc and I am running 13 with spikes to 14. I can't hear any detonation. I had a friend ride beside in his car to listen also. I am running into some bad fuel cut I beleive I am not sure I have never experienced it before. I am fine in first gear but when I shift to second its like the car just shuts down at about 5800 rpm. any help would be great thanks.

 

[kwiktsi]

alright I made myself a mbc and I am running 13 with spikes to 14. I can't hear any detonation. I had a friend ride beside in his car to listen also. I am running into some bad fuel cut I beleive I am not sure I have never experienced it before. I am fine in first gear but when I shift to second its like the car just shuts down at about 5800 rpm. any help would be great thanks.

There is more to detonation than "hearing" it. Also, if I a friend in *another* car were able to hear it from his car- then this thread would be "I just blew my motor running 14 psi on pump gas" ..

You should have more tuning experience before just jumping in a car and cranking the boost up past where it is proven to fail (in "stock" form).. There is a reason you are hitting fuel cut at that psi. Be careful..
Joe

 

[SonicRacer]

:Shakes head up and down agreeing with kwitktsi:

Some reasearch should really be done before doing anything like that. You are just asking for problems man.


So many people have blown Protege motors due to this sort of thing. Running an 80 shot of dry N20, turning up the boost too high, etc, etc. :no:

 

[PHILLY-ORANGE]

Your going to blow it UP y would you push that many psi I push 9-10 at the most. who told you that you could hear detonation that happens in your engine your not going to hear that Kwiktsi is right your going to hear boom whoever told you that you would hear it doesnt know cars.

 

[gvr4ever]

Noobie stepping on toes.

I've been tunning my 4g63t since 98.

You don't turn up the boost if you don't know what you are doing.

Maybe you guys can answer some qustions. I looked around a little and didn't see anything.

What size injectors do our cars have?
How much does the fuel pump flow?
How far out of factory spec can the ECU handle?
How much air can the air meter read before fuel cut?
How much boost can the head gasket take?
How much HP can the crank take?

If you don't know the questions to the answers, you shouldn't turn the boost up.

They already took a na engine and added a turbo. It's not like it started as a turbo engine. So it isn't a 6 bolt 4g63.

Not tring to bash the car, I love it. I hope to have one Monday. I will keep mine stock though. It is a daily driver. I already have a project car.

 

[SonicRacer]

I will keep mine stock though. It is a daily driver. I already have a project car.

Lol... Sounds like what I said. I was just going to keep it as a daily driver continue building my 87 RX-7 TII. I've had the car for just over a week and put an intake, exhaust, and strut bar on it already. I see my RX-7 dreams going down the drain now.

 

[gvr4ever]

We if I do anything it would just be a intake. I like the quiet exhaust. I was surprized at how quiet it was.

I have a 92 Galant VR4. I can't afford to mod two cars. Also you can't mod a car without having a louder exhaust. I really would want to keep a MSP stock. It has enough power for a daily driver. No street racing, no nothing. I have another car for that.

 

[SOSPEED]

The best way to make sure that your engine is running fine is to get an A/F meter and an exhaust temp gauge.. And if you really want to turn up the boost and you want to test the motor you get the A/F meter, exhuast temp gauge, Boost sensitive fuel regulator and a boost time retarder. But then again nothing beats a stand alone unit.

 

[DiscreetSpeed]

Noobie stepping on toes.

I've been tunning my 4g63t since 98.

You don't turn up the boost if you don't know what you are doing.

Maybe you guys can answer some qustions. I looked around a little and didn't see anything.

What size injectors do our cars have?
How much does the fuel pump flow?
How far out of factory spec can the ECU handle?
How much air can the air meter read before fuel cut?
How much boost can the head gasket take?
How much HP can the crank take?

If you don't know the questions to the answers, you shouldn't turn the boost up.

They already took a na engine and added a turbo. It's not like it started as a turbo engine. So it isn't a 6 bolt 4g63.

Not tring to bash the car, I love it. I hope to have one Monday. I will keep mine stock though. It is a daily driver. I already have a project car.

i agree but then again imo noone on this board knows....(shrug)
just put some 104 in and enjoy say no more than 16psi.

 

[RyanJayG]

104 octane may be good for turning up the boost.. but its far from safe to do so... you're gonna break an axle or a tranny like that.

 

[t3ase]

104 octane may be good for turning up the boost.. but its far from safe to do so... you're gonna break an axle or a tranny like that.

Word. Our axles are HELLA weak. My driver's side went out at like 12k or so and that was when I was at stock boost. Now the same one is throwing grease all over my wheel, I just haven't had a chance to take it in.

 

[kwiktsi]

Word. Our axles are HELLA weak. My driver's side went out at like 12k or so and that was when I was at stock boost. Now the same one is throwing grease all over my wheel, I just haven't had a chance to take it in.

leaking cv boot does not equal a weak axle. Not that they aren't weak, but the two are not even related. Also, it is all about "finesse"- I never broke anything and had the fastest times/highest HP for a while there . Even my Z28- people tell me all the time "you are going to blow the stock rear running those times" or "there is no way the stock trans can handle that" You need to know the limits and drive accordingly. I can get in a bone stock MSP and break it before I even left the lot with it if I wanted- but the idea is to go fast, not beat the snot out of it.. Hell, I even speedshifted mine all the time with no trans issues. You just need to know "how" to do it without damaging anything. Takes a certain feel I guess .
Joe

 

[DaKidd]

[Thread Jack on]

I just wanted to say thanx to JoeP for hanging around even after he sold his MSP for a Stang (BTY, Hows that project going?), and had to put up with a lot of BS from some noobs over a few late deliverys. I thought at first that u would jet after the sell of the MSP, then I thought u would go for sure after I read all of the BS post about those orders. Anyway, Thanx, I value ur advice.

[Thread Jack off]

Now back to our regularly scheduled program...

 

[kwiktsi]

Word. Our axles are HELLA weak. My driver's side went out at like 12k or so and that was when I was at stock boost. Now the same one is throwing grease all over my wheel, I just haven't had a chance to take it in.

Hey- I left out that although they do not = weak axles, it does make a horrible mess that SUCKS to clean off when the boot leaks :mad: !!!
Joe

 

[kwiktsi]

[Thread Jack on]

I just wanted to say thanx to JoeP for hanging around even after he sold his MSP for a Stang (BTY, Hows that project going?), and had to put up with a lot of BS from some noobs over a few late deliverys. I thought at first that u would jet after the sell of the MSP, then I thought u would go for sure after I read all of the BS post about those orders. Anyway, Thanx, I value ur advice.

[Thread Jack off]

Now back to our regularly scheduled program...

Lol, it is all the emails I got saying pretty much the exact same thing that kept me around.. The stang is staying stock for a while, I have my exhaust, gears and bottle here for it, but I have been playing with my Z28 lately and the GT is just a cruiser for now. I still want to turbo it, but I have to get my Z back into the 10's first- it is hung up in the low 11's, I gotta work on traction- it traps at 126, but cannot break out of the 11.1 range .. Once that is done, the GT will be played with . It has more MPH than ever before, but since it is making more power, the traction issues are hurting the ET's .
Joe

 

[imnike9000]

so what do you suggest I get before I run this high of boost. Obviously it can be done I see the other people on here doing and saying it is not hurting anything. Or maybe I just don't understand this is my first turbo car and I am learning alot here but I think maybe too much without understanding.

 

[SonicRacer]

Well did you read the things that were already posted in this thread?

 

[gvr4ever]

If you must turn up the boost, I would only go 2-3psi above stock.

Has anyone installed a boost gage on a stock car without a MBC?

What are they running.

Remember, this car is a tunned na engine. It is already above what stock was. I'm afrade to get the truth, you will need time. Another reason I want to keep my car stock. I'm getting it for the way it handles, now how fast it can go in a streight line.

The car I tunned has already had a decade of people figuring crap out. This car is new and I can't imagine there being a expert on it.

The turbo: The Garret T25 is a fast spooling turbo, but is not a top end puller. It is the same turbo used on the Eclipse, Talon 2G. It falls off on top end. However, that was on a 2G that ran 12psi stock. If the MSP runs 6 psi stock, the stock turbo should be able to hold it to red line. So if you add 3psi, can the stock turbo hold full boost to 9psi on top end? Does the stock injectors, and fuel pump flow enough for 9psi to red line?

I myself would wait for information about what the engine can do before turning up the boost.

A intake, larger IC and piping, and exhaust work is probably the safest upgrades you can do. While a boost controler and boost gage are the cheapest, it might not be the best. Also, the stock exhaust size doesn't suck. The best thing to do is add high flow cats (if you want a stock look) and maybe a better muffler.

The upper IC pipe isn't small. The IC isn't tinny winny, so if it flows as well as the upper IC pipe, it should flow enough for anything under 10psi.

If you want a fast ass car, I don't think a MSP is the way to go.

 

[SonicRacer]

Remember, this car is a tunned na engine. It is already above what stock was.

This car is new and I can't imagine there being a expert on it.

The car is new, the motor is not. Mazda has been using them in Mazda cars (and the Ford Probe SE/GL) for the past 10 years. And people have been messing with them for almost as long.

I believe the World Challenge guys are getting something like 240whp all motor in their Proteges.

By the way... Things like what the injectors and fuel pump are capable of handeling is something anyone can figure out in a matter of minuets. You just need to know the sizes.

 

[kwiktsi]

If you must turn up the boost, I would only go 2-3psi above stock.

Has anyone installed a boost gage on a stock car without a MBC?

What are they running.

Remember, this car is a tunned na engine. It is already above what stock was. I'm afrade to get the truth, you will need time. Another reason I want to keep my car stock. I'm getting it for the way it handles, now how fast it can go in a streight line.

The car I tunned has already had a decade of people figuring crap out. This car is new and I can't imagine there being a expert on it.

The turbo: The Garret T25 is a fast spooling turbo, but is not a top end puller. It is the same turbo used on the Eclipse, Talon 2G. It falls off on top end. However, that was on a 2G that ran 12psi stock. If the MSP runs 6 psi stock, the stock turbo should be able to hold it to red line. So if you add 3psi, can the stock turbo hold full boost to 9psi on top end? Does the stock injectors, and fuel pump flow enough for 9psi to red line?

I myself would wait for information about what the engine can do before turning up the boost.

A intake, larger IC and piping, and exhaust work is probably the safest upgrades you can do. While a boost controler and boost gage are the cheapest, it might not be the best. Also, the stock exhaust size doesn't suck. The best thing to do is add high flow cats (if you want a stock look) and maybe a better muffler.

The upper IC pipe isn't small. The IC isn't tinny winny, so if it flows as well as the upper IC pipe, it should flow enough for anything under 10psi.

If you want a fast ass car, I don't think a MSP is the way to go.

Valid points, however, you are about 6 months too late for this .. The car has proven to tune very well for what it is. While it is and never will be the next DSM, it is still a very potent sedan that will surprise a lot of people with the proper stuff.. Hell, even all the DSM people keep trying to reinvent the wheel with DSM tuning also, so saying there is over a decade there doesn't do anything .
Joe P.