Is this good boost??
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Senior User
Joined: Jan 2008
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From: Upstate NY
Is this good boost??
I put my new ISSPro EV2's in last week, now I can keep an eye on what the trucks doing with the tuner it has. My question is what is good / normal boost for these things with chips? I have PHP programs on my DP chip and I noticed that while cruising highway at approx 65mph (almost 2k) my boost is 4-6psi. I can make over 20, but I need to have my foot on the floor and it's at the very top of the RPM range. It's Diesel, and it's not a Detroit, so this does not seem right to me. How do I get good boost down low where I'd like it? Say 1400-1800?? Can someone with similar mods post a vid or something so I know how it should act.
Thanks,
Wayne.
Oh, I have a pre-turbo pyro, installed in the manifold. At the same cruising speeds posted its about 600-700 deg. Foot flat on the floor in a bunch of gears it won't go over 1100, so I don't think I have an exhaust leak.
Thanks,
Wayne.
Oh, I have a pre-turbo pyro, installed in the manifold. At the same cruising speeds posted its about 600-700 deg. Foot flat on the floor in a bunch of gears it won't go over 1100, so I don't think I have an exhaust leak.
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Joined: Feb 2009
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Seems a little low on max boost, but tuning has alot to do with it. Different trucks and configurations can also react differently.
Post Fiend
Joined: Feb 2008
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From: Lancaster, Pa.
Your highway boost levels and pyro temps. sound fine but the norm at full throttle can range between 18 to 24 PSI's and anything over that your risking damage to your turbo and it starts to defuel unless you have a boost fooler. And getting your temps over 1100 isn't a good thing for extended periods of time either with a stock turbo I believe. Maybe Bill at PHP set your chip not to go over that 1100 degrees for safety reasons, give him a call.
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Joined: Apr 2009
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From: Northern Idaho
1300 max for very short period of time. Do NOT maintain 1300. 1100 is ok, but lower is always better.
On the hwy I run anywhere between 3 and 6 lbs boost, average 4 or 5 with my new tires and at 2K RPM. Exhaust temp sits about 700.
My boost tops out at 24 and then starts fluttering between 23 and 24.
On the hwy I run anywhere between 3 and 6 lbs boost, average 4 or 5 with my new tires and at 2K RPM. Exhaust temp sits about 700.
My boost tops out at 24 and then starts fluttering between 23 and 24.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
You can spike EGTs a HELLUVA lot higher than 1300. I've nearly buried my 1600 deg gauge many, many times. I run maybe 2-3 psi and 500-600 deg on the highway @ 70ish mph, and I can bury my 35psi boost gauge when I floorboard the pedal. But I have little different configuration... 
Your stock truck tuned numbers cruising sound about right, with the max boost being a little low. Are all your boots tight and in good condition? You could be losing a little boost on the high end because of a loose clamp...
Your stock truck tuned numbers cruising sound about right, with the max boost being a little low. Are all your boots tight and in good condition? You could be losing a little boost on the high end because of a loose clamp...
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
I put my new ISSPro EV2's in last week, now I can keep an eye on what the trucks doing with the tuner it has. My question is what is good / normal boost for these things with chips? I have PHP programs on my DP chip and I noticed that while cruising highway at approx 65mph (almost 2k) my boost is 4-6psi. I can make over 20, but I need to have my foot on the floor and it's at the very top of the RPM range. It's Diesel, and it's not a Detroit, so this does not seem right to me. How do I get good boost down low where I'd like it? Say 1400-1800?? Can someone with similar mods post a vid or something so I know how it should act.
Thanks,
Wayne.
Oh, I have a pre-turbo pyro, installed in the manifold. At the same cruising speeds posted its about 600-700 deg. Foot flat on the floor in a bunch of gears it won't go over 1100, so I don't think I have an exhaust leak.
Thanks,
Wayne.
Oh, I have a pre-turbo pyro, installed in the manifold. At the same cruising speeds posted its about 600-700 deg. Foot flat on the floor in a bunch of gears it won't go over 1100, so I don't think I have an exhaust leak.
Which DP chip do you have?
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Senior User
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From: Upstate NY
I have no idea which chip it is, I got it from a buddy. It's a old school TS style six position though.
From what everyone seems to be telling me is that it's totally normall for it to not reach max boost until well over 2k rpms??? I want to make more boost earlier, thats all. I don't like to really beat it to get it to go when I need it to go.
I've never even touched 1200 on the pyro. probably won't ever either.
It's definitely making over 20 on the top end, I just can't take my eyes off the tach long enough to get an exact number. I don't like hitting the limiter, that ****s for Hondas, so I try not too.
What i'm trying to say is i want to make max boost at like 1400-2100 rpms. not 2400+ i'm never up there.
From what everyone seems to be telling me is that it's totally normall for it to not reach max boost until well over 2k rpms??? I want to make more boost earlier, thats all. I don't like to really beat it to get it to go when I need it to go.
I've never even touched 1200 on the pyro. probably won't ever either.
It's definitely making over 20 on the top end, I just can't take my eyes off the tach long enough to get an exact number. I don't like hitting the limiter, that ****s for Hondas, so I try not too.
What i'm trying to say is i want to make max boost at like 1400-2100 rpms. not 2400+ i'm never up there.
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Well, your engine isn't really starting to make power until 1800-2100 rpm. If you are hitting the rev limiter I would say you need to talk to your tuner since it should be around 3000-3200 rpm.
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Joined: Jul 2009
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From: Lansdale, PA
One thing I have noticed in these older trucks, the wastegate actuator gets weak after all the heat cycling and age. Shorten the wg actuator rod 1-2 turns and see if that helps your boost. If anything it will help reduce exhaust leaking by the wg flapper and make the truck a little more responsive and all around better.
Being that you have a 6spd, you may have a little more lag then us auto guys, but even when I roll on the throttle and before boost hits, my truck lags in the boost department as well.
Being that you have a 6spd, you may have a little more lag then us auto guys, but even when I roll on the throttle and before boost hits, my truck lags in the boost department as well.
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Senior User
Joined: Jan 2008
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From: Upstate NY
One thing I have noticed in these older trucks, the wastegate actuator gets weak after all the heat cycling and age. Shorten the wg actuator rod 1-2 turns and see if that helps your boost. If anything it will help reduce exhaust leaking by the wg flapper and make the truck a little more responsive and all around better.
Being that you have a 6spd, you may have a little more lag then us auto guys, but even when I roll on the throttle and before boost hits, my truck lags in the boost department as well.
Being that you have a 6spd, you may have a little more lag then us auto guys, but even when I roll on the throttle and before boost hits, my truck lags in the boost department as well.
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