What is your boost set to?

[Goblin]

Ok the past few days I've been arguing with my stupid brother about what PSI you can run a turbo at and not destroy the engine. I keep telling him that with a DSM you can run 15psi and be relativly safe, he says you can't run 15psi because POP would go the head gasket (I know he if full of sh*t but I need more than just me to tell him that) SO...

1) What is your PSI set to around town (just causual or comuter driving)

2) What is your PSI set to when your driving "spirited" (boosting like no tomorrow or racing)

Please just post your boost I don't want to debate the issue just get a consensess on the boost people run thanks much!

 

[turboholic]

-GReddy ProfecB 0.95 & 1.25 kg/cm^2.

 

[nowayout]

15 psi all the time on 93 oct gas.
No knock or timing retard with pocketlogger.

that's with intake, testpipe and boost contrller.

 

[Quacylla]

On the stock fuel system/turbo/interooler you can go 15 psi safely.

 

[NosLaser]

I used to run 19 pounds on a small 16g on an 80 shot dry kit on pump gas on the street. It's all in the tuning, and how nicely built your motor is. With just free mods, I would run 17 pounds on pump gas pretty much all the time.

Regards,

 

[Quacylla]

What's the question? What boost can you run with a stock car without hurting something? Or is it what boost can you run on stock internals with the correct supporting external mods and tuning tools without blowing the head gasket? The answers are totally different.

 

[Goblin]

I just want to know YOUR boost setting is (I can check your mods off your profile so no real reason for you to post them here unless you really want to, either way it's cool).

I just want some backing when I tell my brother he is stupid when he tells me things like "No one runs 15psi all the time and if they do they are giving your a line of bull sh][t and if you run it you are going to kill your motor."

So that is the question.

My brother is a big jackass last night he was screaming at me trying to tell me that turbo's run by pressurizing exhaust gas and sending it back through the motor... You don't get much dumber than that, but he KINDA has the right idea except for the whole car running off exhaust gases part . I asked him "Just think about what you are saying how can a car run off an inert gas?" He had no reply.

Then he tried telling me that the "boost" comes in through this tiny hose mounted to the intake manifold (on his car (not a DSM) I'm sure it is the EGR line). I then spent 15 minutes trying to tell him that the intake is pressurized from the turbo on, so it's pressurized all the way through the intercooler and everything else, he then started screaming and saying the boost comes in through the little hose (the EGR).

Then he started telling me that his BOV is under the Turbo!! He pointed to it and I said "you moron that is the wastegate!". 30 minutes of screaming later I showed him where his BOV was and he started telling me that I'm "wrong and that is the PCV!".

As you can see he is hoplessly retarded. He believes everything that his mechanical engineer friend tells him religiously (even though he is a mechanical engineer he REALLY DOESN'T know as much about cars as he likes to think). Anything I tell him is wrong, so now I'm looking for backing from the forums.

I'm tired of everything I say being a "Lucky guess," after his moron friend finally agree's with me!

 

[95talontsi]

yeah most people would not think that 15 psi of boost would kill stock engines except for ours. It's really strong and meant to take the abuse.

 

[L2RTSiAWD]

I ran 20psi all day 91 octane on my mutt and will be running 19-20 all day on 91 octane on my new AGP L2R. Stock 7-bolt block

 

[Black95GSX]

Originally posted by Goblin
Ok the past few days I've been arguing with my stupid brother about what PSI you can run a turbo at and not destroy the engine. I keep telling him that with a DSM you can run 15psi and be relativly safe, he says you can't run 15psi because POP would go the head gasket (I know he if full of sh*t but I need more than just me to tell him that) SO...

1) What is your PSI set to around town (just causual or comuter driving)

2) What is your PSI set to when your driving "spirited" (boosting like no tomorrow or racing)

Please just post your boost I don't want to debate the issue just get a consensess on the boost people run thanks much!

1. 20psi (21 in winter)

2. 25ish psi (1.74 BAR)

 

[Moorepwr]

15 psi all day long. Tell him to get rid of his honda

 

[Silent2g]

90 tsi. 14.5 all day on 92 octane {stocker/free mods}
95 gsx, 28 psi on 112 octane {nifty built motor}

 

[EclipsingU]

13

15

Remind him we have 7.5:1(1g) 8.5:1(2g) compression on stock motors. Compression and boost are tradeoffs. His 10.5:1 compression ratio isnt going to be able to handle 15psi stock.

 

[GVR-4]

18

 

[DSMWillyb]

10 psi daily driving

17 psi when I need to take care of business

 

[Kevin Jewer]

19 psi daily, stock 120k miles 1g motor, stock 150k mile 1g turbo.
25 psi on race gas, no problems other than the slow 12.5 ET

 

[mike9146]

15 psi on current mods, 19+ soon w/Spearco 2-120 on pump 92. (Hopefully)

Mike C.

 

[larryd]

15 on low boost
20 on high boost

its a DSM thing.. most other car owners dont understand that we run more boost stock then they do in total when they add a turbo kit

 

[GSTwkd]

HKS evc 4 low setting-- 1.1bar @ 16psi for cruising around and high setting--1.4bar @ 22psi if I think I'm in for a good race. Always have 93 oct. gas in tank.

 

[memet]

Sorry ...I'm not into daily driving, so my boost is always set :

22 psi..running on AVGAS only

 

[GreddySpyder]

I run 16psi daily on the stock T25 using 93 octane gas. I have full Greddy intercooler piping, Greddy BOV, and Greddy EVO catback, and a MBC.

 

[RamenPride]

14B, 93 octane, rewired stock pump

15psi with a Hallman MBC

 

[blackawdturbo]

Big 16g

18-19 psi street, actually creeps to 20

23-24 psi track with c16 race gas

 

[jdmawd]

10:laugh:

 

[E Racer X]

I run 15 psi all day on 93 octane with stock exhaust.

Buschur Racing and others advise you can run 18 psi all day on 93 octane with stage 1 mods (14b turbo).

I've heard you can push it to 20psi on 100+ octane at the strip.