My car was tuned and then set at 11psi. Tonight I up'd it to 12 psi but it settles around 11.5. I have a wideband o2 installed and the numbers are perfect. How much is this going to affect my tune? My concern is with timing. It made 256whp and 243tq on 11psi but best numbers were on 14psi. So the fuel and timing have to be there for more boost if it was dyno'd up to 14psi. He is a conservative tuner and I believe he just doesn't like to push motors very hard so they are reliable. I know a stock ls can handle more then 256whp. Will it be alright. Thanks,Adam

 

does something look funny there? haha

i'd leave it at 10, honestly. if you want to run a higher pressure and have the bits to support that, you should get it tuned for that. otherwise leave it alone, IMO.

leaving a buffer like your tuner has done gives you headroom for things like heatsoak, hot intake air temperatures, etc, etc.

i'm pretty conservative with stuff like this - being conservative makes engines last longer ; )

 

you should retune for higher and just turn the boost down a bit if you want more power

 

well if the a/f are fine then i wouldnt worry too much, i mean its not like you should be on a aggressive timing curve

 

Highest whp was on 14psi. So I know fuel and timing are there. He is very conservitive that's why he said 11 was ok.

 

So run eleven or tune the car yourself. Don't be that customer.

 

haha....exactly where i was coming from ; )

 

Car was tuned to 14psi and then backed off to 11 psi. Dennis tunes his cars off of torque not hp. He is extremely conservative. If it was tuned higher then turned down then I should be able to run it up to where it was tuned. I wouldn't of drove 1.5hrs and payed 375 dollars if I could tune it myself.

 

It was tuned on 14psi then backed off ~4psi and the tune itself wasn't changed after that?

 

no one is hating brah. we are getting it, atleast i am.

if the tuner said to go to 11 max, why the heck would you want to go higher?? he didn't say "it's good to 11 psi, but i'm conservative so in reality it's good to go to 12 or more" he said 11. don't go higher, unless he tunes it for that. he's the expert. otherwise we can't help you - we don't know the parameters and tune. that's what "Dennis" is for...and why you paid him.

if he's conservative, he's probably conservative for the same reason i am conservative - because being conservative keeps engines together, cars on roads and funds in pockets.

 

If it was tuned for 14psi and you want to run 11psi I dont understand exactly what your question is...

The timing/fuel should be scaled out past where you were tuned to just incase an overboost or something else of that nature does occur... it might not be spot on but close enough to keep stuff from melting.

 

Are you going to trust the guy you paid or the folks on the internet... lol.

If he tunes conservatively then using your logic 15 should be okay too.

 

Listen to your tuner. Watch your a/f ratios. /end of thread

 

I'm asking on the internet b/c I know there are plenty of people making way more power then me and it's completely safe. Obviously if my max hp was on 14psi then the tuning "fuel/timing" is there for that amount of power and boost. He backed it down b/c he is conservative and wants it to be long lasting.

 

So much love in this thred. LOL If the tuner tuned it to 14 psi and there is no reason you cant turn the boost up to 14 psi. if its a reputable tuner then it definatly isnt an issue. Turn the boost up and watch the a/f ratios. if there not on par with 11 psi a/ ratios then immediatly stop boosting and turn the boost back down. thats about as straight forward of an answer you can get my friend, good luck

 

If this was yahoo you have the top answer. Thanks for helping me out a second time. My a/f at wot was 11.9 on 12psi. Cruising between 70-80 in 5th they were around 15.5-16.3

 

Oh yeah, you're that customer now...nice job.

We can speculate and question this guys ability all day long but YOU picked him and paid him to do a job for you. Respect him and protect yourself by taking his advice. If you don't want to run 11 go ask the guy yourself what needs to be done to run more, not us.

 

Good luck

 

Well if it was Monday I would be calling him. Shop is closed on the weekend. Just trying to get input like I mentioned before. I went to him because I know him personally and he happens to be the closest tuner to me. Plus he has tuned mutiple cars belonging to my friends and they are doing great. 3+ years on a dd boosted ls.

 

if your tuner knows how to tune i dont undertstand why you couldnt run 14 psi w/o a problem? maybe you dont know how to word your question or your not to smart.... and if you were tuned at 14 psi, why would you not be able to run it at 12 psi? See why people might flame you.... you dont make any sense

 

Ive said the same thing your saying this whole time. How does that not make any sense.

 

In your case the only effect you will have is more power! Im gonna break it down real simple for you here using what you have told us.
-You said the car is tunned on 14psi
-You said the car made the best numbers on 14 psi
-You said the tunner turned it down to be safe
-You said there is enough fuel and timming
-You said you had 11.9 AFR on 12 psi
From what YOU are telling us, YOU should be able to turn it up and be fine

 

in a case like that the best bet is to report the post and do not respond in the thread. since i'm not a mod in here i had to report the initial post myself and someone else will come in here and now have to clean up and/or delete practically an entire page of posts.

enough about dogs. if you want to discuss forced induction tech, please feel free.

 

built hatch is saying it best. please stay on topic. keep the bickering in pm's.