Max safe boost? [Merged 10-6]

[Turbolaser]

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

 

[GsXdSmKingGsX]

This just sounds like a really bad idea

 

[Imback]

Plus i don't see the stock feed and filter as a restriction at his level.

 

[DSMer541]

This just sounds like a really bad idea

 

[GsXdSmKingGsX]

You'll see when you start running this setup

 

[DSMer541]

Are you even logging the wideband in link? Is it accurate with the gauge?

unfortunetly no... it seems the only way i can log it is if i run NB sim. and i dont want to ditch my o2 sensor. but its pegged -- under WOT and fuel trims are good and A/F est. and old A/f ratio line up well. i can post a log if you'd like.

 

[Imback]

What a great explanation.

unfortunetly no... it seems the only way i can log it is if i run NB sim. and i dont want to ditch my o2 sensor. but its pegged -- under WOT and fuel trims are good and A/F est. and old A/f ratio line up well. i can post a log if you'd like.

Get a wideband that will log through link. Looking at the gauge and looking at the rpm's to see were you are rich and were you are lean is never a good idea.

 

[GsXdSmKingGsX]

What a great explanation.



Get a wideband that will log through link. Looking at the gauge and looking at the rpm's to see were you are rich and were you are lean is never a good idea.

Get off my dick man. I just dont see this happening at 92 octane without water/meth..Safely that is

 

[DSMer541]

You'll see when you start running this setup

thats why im here asking for advise... if you have none to offer then i dont want to here it... i will take creative criticism...

 

[BigBeans]

What about spark? should i gap my plugs a little closer or go to 8es for the track?

The gap will be fine.

I personally love the BR8ES (Not BPR) because the non-projected tip is a little less prone to knock, but you will have hard starting in the cold with that plug. If that doesn't bother you, i'd recommend it.

If you're doing this on pump gas you'll need all the detonation resistance you can get.

Plus i don't see the stock feed and filter as a restriction at his level.

It's a little different on a 1G IIRC.

I started having issues with loss of pressure in the mid 40lb/min range. I did the tank to rail kit (not necessary) and problem solved. Maybe my stock filter wasn't as healthy as it could be, but i know that banjo fitting sucks.

 

[GsXdSmKingGsX]

thats why im here asking for advise... if you have none to offer then i dont want to here it... i will take creative criticism...

Well theres your advice! Goddamn.

 

[Imback]

Could be different on a 1g. I don't work on them to often. To the OP are you still on the stock 1g timing map?

 

[BigBeans]

Get off my dick man. I just dont see this happening at 92 octane without water/meth..Safely that is

Why's that?

He's got the fuel, as long as he doesn't get greedy with timing and plays close attention to the knock sensor he'll be fine.

OP, tune more conservatively at 30psi, you wont get away with the same knock you can in the low 20s. A hot tune for 2 counts of knock will be ok (still a bad idea) in the low 20psi area, but the same 2 counts at 30psi and stuff slowly starts to melt, at least in my personal experience.

 

[GsXdSmKingGsX]

Why's that?

He's got the fuel, as long as he doesn't get greedy with timing and plays close attention to the knock sensor he'll be fine.

OP, tune more conservatively at 30psi, you wont get away with the same knock you can in the low 20s. A hot tune for 2 counts of knock will be ok (still a bad idea) in the low 20psi area, but the same 2 counts at 30psi and stuff slowly starts to melt, at least in my personal experience.

Just so everything you stated doesnt happen. Derr

 

[BigBeans]

Just so everything you stated doesnt happen. Derr

All he has to do when tuning is keep the AFRs down near 11 flat and keep it knock free.

A wideband that can be logged in link wouldn't hurt either.

Good luck OP.

 

[DSMer541]

Could be different on a 1g. I don't work on them to often. To the OP are you still on the stock 1g timing map?

no iv lowerd timing down in the 1.6 load range and over to a peak of 14* and my WB never jumps into the 11:1 range .... even when i got it to 26psi i only had 1.8* of knock but it trickled off, so iv lowered it to 23-4 to be safe wich got rid of it...
,
my AEM is loggable but i have to either ditch my stock o2 for NB sim or get a buffer to run it off the egr signal

 

[kchaazz]

My friend runs 30 psi on an 18g6sl2, but this is on 93 octane for one, and it was very carefully tuned. Also, hes running a built motor. The timing is peaking at 10 degrees up top, and he still gets 2- 3 counts of knock. If you try running timing this low on cast guts, you WILL melt a piston before you can say oh shit. Also, the 6sl2 hotside flows more than the TD05, so less backpressure= slightly less prone to knock, but even still its not a good idea. There are some people on this site who've ran 10's on the stock filter with just a -6 hose going to the rail, but its definitely not the best way to go. If I were you, OP, either tune on E85, or just tune it to 25psi on 92 pump if you can, especially if you dont have forged guts and an EGT gauge...

 

[DSMer541]

My friend runs 30 psi on an 18g6sl2, but this is on 93 octane for one, and it was very carefully tuned. Also, hes running a built motor. The timing is peaking at 10 degrees up top, and he still gets 2- 3 counts of knock. If you try running timing this low on cast guts, you WILL melt a piston before you can say oh shit. Also, the 6sl2 hotside flows more than the TD05, so less backpressure= slightly less prone to knock, but even still its not a good idea. There are some people on this site who've ran 10's on the stock filter with just a -6 hose going to the rail, but its definitely not the best way to go. If I were you, OP, either tune on E85, or just tune it to 25psi on 92 pump if you can, especially if you dont have forged guts and an EGT gauge...

Im on Eagle Rods and Wossner 8:1 pistons / JAM CNC P&P race head 272 HKS cams/ dual springs. ....a little overkill on the head but i built the motor with intention of runing a FP3065 but finacial reasons i had to settle for the 16g for now....


ya Id like to just tune it to about 26 safley , but when the track opens back up this season im gonna wanna get a little more for that extra .** off the ET

Thanx guys!! you've been very helpfull

 

[fran_drivertsi]

I was running 30psi peak, 25 hold on my e316g for about 15k miles. It can be easily done.

You need:

e85
>1200 injectors
ARP headbolts
3-layer headgasket

Most importantly: GOOD TUNER

Good luck!

 

[DSMer541]

I was running 30psi peak, 25 hold on my e316g for about 15k miles. It can be easily done.

You need:

e85
>1200 injectors
ARP headbolts
3-layer headgasket

Most importantly: GOOD TUNER

Good luck!

I have ARP headstuds ( torqued to 90ft/lbs )and Mitsu 4-layer HG ... I would love to go E-85 but i dont have a station neer me....

 

[95talongirl]

I was just going to say... I think meth and e85 is going to be needed in order to do this safely and effectively.

 

[92AWDHX40]

Yep i agree more fuel watch timing.

 

[1995 gst]

So i was thinking of getting a walbro 190 with 550 injectors. what psi do you think would be able to push with those upgrades?

 

[Absit]

On your stock T25, more than the turbo can run efficiently.

 

[Dsmkauai]

I'm running those currently with addition to having my pump rewired. If you are on stock turbo you probably won't see to much gain, since the stock turbo doesnt flow great over 16-17 psi. You also need something to tune with if you upgrade injectors. I'm running around 19-22 psi on my Hrc s16g and next weekend at the track will try and see what my limits are on my setup. If you try to push the t-25 it won't last to long at higher boost levels. Best bet is to get Ecmlink learn to tune then start your upgrade path.

 

[1995 gst]

i dont have stock turbo ill have a big 16g. and 550 injectors dont need tune.