Max safe boost? [Merged 10-6]

[Turbolaser]

Is it safe to do the boost contol solenoid mod on a stock 1G?

 

[97gsxIA]

That is probably one of the longest routed IC piping I've ever seen . You think that Lower IC piping can even be called "Lower"? hehehe

From what is sounds like little bro, you need to just start from the basics. Looks like someone threw a bunch of garbage in there (happened to me too, dont worry brother!) I'd try and get the car back to stock and run all the numbers on every aftermarket part on it. You can run stock WG boost on 16g with stock injectors until you get bigger ones, but like I said.. I'd get it as close back to stock( or safe running **USING A WIDEBAND AND LOGGER**) as you can with that 16g, eliminating everything you can that you "dont need."

Then once you have the knowledge.. put stuff back in the way you want it (or at least they way it needs to be)

This site will do you wonders. You got lots of years ahead of you! Shit, I almost spent my whole first year just reading before I layed hands on aftermarket parts. Knowledge it power, bud! and we got lots of both around these parts!

Good luck!

 

[awddarrell]

Sorry I edited my Post becuase I failed to read everything wand what I had suggested was already suggested and replied too, any way I hope you get the porblem solved man, GL.

 

[Tooltrt87]

Ok so I have received amazing help this year with my car and
trying to make sence with ecm link. The results at 25 psi on a stock 6 bolt
with fp green kelford 264/260 cams stock head and intake on 93 is an estimate of 320 hp
I am pleased but its addicting !! I want more!!
So i ask should i should i try 30 psi. Im using a gm maf know how
to use maf comp very well. Is there any reason to not do it?
Or just do it and be careful.
Just wanna be smart about it.

 

[airmail96]

I would say just crank her on up to thirty and be careful. You have head studs, and you have link to monitor things with. I would just increase it bit by bit and make sure to moniter everything as you go, I think the thing you might have to watch the closest is the timing.

 

[99ECLIPSEGSXDSM]

Is it me or is that low for a fp green at 25 psi? If that's the case im gonna stay with my evo3

 

[Breezio69]

Is it me or is that low for a fp green at 25 psi? If that's the case im gonna stay with my evo3

I was thinking the same thing...

 

[ChrisBaysinger]

I just got the car, the guys told me it was all stock. 20k miles on a reman head and arp studs, 10k on stage 1 clutch. 160xxx miles. new timing belt and headgasket already... I'm new to DSM's and I was just wondering if there's anything I should watch out for? It's got a mbc, it's spiking to 19 and holding 17. Is that safe on the stock motor with studs? Fuel system is stock as well, just wondering what it would take to get a little more power safely!!

Chris

 

[RedGST98]

I just got the car, the guys told me it was all stock. 20k miles on a reman head and arp studs, 10k on stage 1 clutch. 160xxx miles. new timing belt and headgasket already... I'm new to DSM's and I was just wondering if there's anything I should watch out for? It's got a mbc, it's spiking to 19 and holding 17. Is that safe on the stock motor with studs? Fuel system is stock as well, just wondering what it would take to get a little more power safely!!

Chris

I had a big t-28 on my 98 with stock head bolts stock internals and I was able to push just under 25psi with a mbc...

 

[99ECLIPSEGSXDSM]

Turn your boost down to 14-15psi if your fuel system is stock. Upgrade the pump get a datalogger wideband and upgrade your injectors and after you can see what the motor and fuel temp then you can turn it up.

 

[ChrisBaysinger]

I have a data logger, I don't know how to upload the results from the log tho? I turned the boost down its spiking to 16 and holding 15. The data logger is a program on a pda?!? It's got a Mitsu emblem and I don't recall the letters underneath of it. If I could get those results from the log on here, would you be able to tell me more from there? It's wired for a wideband already, just have to come up with the money to get one!

 

[ChrisBaysinger]

Log results. 3rd gear wide open..

At 7k rpm
TPS: 99.6%
INJD: 93.7%
KNCK: 29
TIMA: 7*
02-R: 0.70v
02-F: 2.57v
Coolant: 186*
Batt: 12.9v
AIRT: 95*F
ISC: 96
Baro: 13.9psi
INJP: 16.1 ms
MAFS: 1599hz
FUEL: 101.2 psi

This is on 14psi like you guys said. Those are all the numbers that my handheld gave me on the log. Can anyone give me an idea of what's going on and where I stand with the car and what I should do?

 

[91stocker]

Log results. 3rd gear wide open..

At 7k rpm
TPS: 99.6%
INJD: 93.7%
KNCK: 29
TIMA: 7*
02-R: 0.70v
02-F: 2.57v
Coolant: 186*
Batt: 12.9v
AIRT: 95*F
ISC: 96
Baro: 13.9psi
INJP: 16.1 ms
MAFS: 1599hz
FUEL: 101.2 psi

This is on 14psi like you guys said. Those are all the numbers that my handheld gave me on the log. Can anyone give me an idea of what's going on and where I stand with the car and what I should do?

You injectors are basically maxed at 94% injd, your getting alot of knock and pulling loads of timing. The car probably feels sluggish doesnt it. 29 counts of knock at 7k is a no no.

You should update your mod list, or is this on a completely stock car?

It also appears that you have maxed out the stock maf, assuming your on the stock maf. 1599hz is as high as the 1g maf can read iirc.

My advice would be to run wastegate pressure or turn down the boost until you get some sort of tuner on that thing.

O and i would adjust the throttle cable until it reads a full 100% at wot. Not a big deal, just that when you mash it you want it completely wide open.

 

[ChrisBaysinger]

Yeah it definitely feels sluggish once its at full boost.. I was told it was a bone stock car, minus the arp studs, mbc, and clutch... The highest count i saw on knock was 41, And i know that isn't safe at all. :/ I'm gonna turn the boost down to below 10 psi. Any other numbers you wanna see at certain RPM's? I've got from 2300 to 7k.

 

[91stocker]

Stock turbo even? Something seems off for a bone stock car. 14psi on a 14b should be just fine. Maybe you have a 16g on there?

 

[ChrisBaysinger]

Yeah, stock turbo.. It says "td04" on the housing and it has some other numbers on it as well.. That's what I was thinking as well.. Why are my numbers so far out of whack for a car that's "stock". I'm sooo lost.

The graph on the log doesn't match the numbers... It's low on the graph when it reads 41 but its way higher on the graph at 26, 30, n 32. It reads 26 at 4k, 30 at 4600, and 32 at 6800... But the 41 showed up at 5700... and now I just found 42 at 5200...

 

[airmail96]

Are you talking about knock? Sir with that much knock there is something seriously wrong with your car, you shouldn't be knocking like that at suck low boost and a 14b. I think it is time to go through your car with a fine tooth comb.

 

[LxiMax]

Probably a stupid question, but when upgrading the stock exhaust system, I know you gain a few lbs of boost due to it being more free-flowing. Now does the boost controller keep boost levels in check or can you just run off the waste gate pressure. I have no intentions of raising the boost level, just curious if the controller is needed to keep the levels down.

 

[91stocker]

Probably a stupid question, but when upgrading the stock exhaust system, I know you gain a few lbs of boost due to it being more free-flowing. Now does the boost controller keep boost levels in check or can you just run off the waste gate pressure. I have no intentions of raising the boost level, just curious if the controller is needed to keep the levels down.

Nope, the controller will not be able to control it. The larger exhaust will cause "creep". The exhaust becomes less restrictive then the wastegate passage, causing it to spike uncontrollably.

To run low boost with a large exhaust, you will need to port the wastegate passage and enlarge the hole underneath the wastegate flapper. There are many many threads here on tuners explaining how to do so.

Not a real big deal if you've had the turbo off before. Otherwise expect a few broken bolts and some re-tapping of threads .

 

[ChrisBaysinger]

I'm gonna have to go through it, it said the max reading yesterday during a small rev was 132, the car doesnt make any noise at all tho.. The motor doesnt make any noise. I'm gonna change the oil today! Is a reading of 132 from the knock sensor even possible???

 

[91stocker]

I'm gonna have to go through it, it said the max reading yesterday during a small rev was 132, the car doesnt make any noise at all tho.. The motor doesnt make any noise. I'm gonna change the oil today! Is a reading of 132 from the knock sensor even possible???

Pick yourself up a new knock sensor. Its really part of the basic maintenance.

Here's a good place to start.
DSM 4G63 Maintenance Guide - DSMtuners

Then when your done with that, you can move on to here
Tech Guide: 1G 4G63t Upgrades: Stage 0 Power - DSMtuners

 

[vpr131]

I was wondering how much boost a rebuilt 4g63 w/ 30 pistons (otherwise stock), stock injectors, and the stock fuel pump can handle w/ the evo3 turbo SAFELY. I have heard anywhere between 12-16psi but if anyone has experience with this set up, I would love to know how much you are boosting and if you have had any problems.

 

[Sebba]

I was wondering how much boost a rebuilt 4g63 w/ 30 pistons (otherwise stock), stock injectors, and the stock fuel pump can handle w/ the evo3 turbo SAFELY. I have heard anywhere between 12-16psi but if anyone has experience with this set up, I would love to know how much you are boosting and if you have had any problems.

This question has so many variables.

Bottom line, it'll hold more boost than you'll ever push through it.

 

[bryanwheat]

There really is no right answer for this question. You would have to get a wideband and dataloggler and monitor the car. It could be fine at 16, or it could detonate at 14.

 

[vpr131]

yeah thats what i thought, do you guys know of anyone who works on DSMs in tampa? ive been looking around and cant find anybody who works on them around here

 

[my dreamt dsm]

I'm doing 17psi fine on stock motor and fuel system(evoscan)... but every car is different. Majority say 12-16 is safe.