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Old 03-29-2007, 01:57 PM
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Wastegate question;

I've seen several threads on the wastegate line being hooked up or not, etc. etc.

Today I popped of the hose that's on the wastegate and took it around the block, my boost went from 16-17PSI at WOT to 20PSI at WOTish around the block. A little faster spool up too. Just cruising around and having a wastegate not hooked up, I noticed my boost is a little higher than it usually is under the same driving conditions, which I assume would be because there is no "engineered leak" present. Letting off the skinny pedal at 20PSI was pretty cool to hear that turbo cough, the real fast chug-chug-chug. It makes me want to call up DP-Tuner a little faster now.

Any negative issues with keeping that wastegate hose off and not letting the "engineered leak" occur? I put it back on the Wastegate anyway.
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Old 03-29-2007, 05:58 PM
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Not that I know of I have mine off and at WOT I've seen 32 psi boost might have gone a little higher but I backed off. I don't know what the max boost is on a stock turbo w/ an ATS Compressor housing. I know with stock turbo (no mods) you want to be careful with 30 psi.
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Old 03-29-2007, 09:03 PM
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Originally Posted by Mikes7.3 View Post
Not that I know of I have mine off and at WOT I've seen 32 psi boost might have gone a little higher but I backed off. I don't know what the max boost is on a stock turbo w/ an ATS Compressor housing. I know with stock turbo (no mods) you want to be careful with 30 psi.
30 is the highest you want to go on the stock turbo. Just because you have an ATS housing you still have the stock insides and they dont like playin over 30 much. To answer the OP as long as you dont go over 30 lbs too much you will be allright. I know its only hittin 20 now but once you get that DP look out.
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Old 03-29-2007, 09:17 PM
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do any of you have the boost preassure sensor eliminator to keep the truck from defueling when it goes over 22psi of boost?
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Old 03-29-2007, 09:25 PM
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i dont have a sensor elimantor but I do have the one that SP Diesel sells and it works fantastic. Unhooked the wastegate and spool is faster and like 31 lbs now.
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Old 03-29-2007, 09:28 PM
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Oh, you mean sp's "dongle"?
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Old 03-29-2007, 09:31 PM
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same here, no wastegate connected for a long time now, I have the MAP Maximizer works great, 30-32 PSI is common, in fact it happens every day
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Old 03-29-2007, 09:45 PM
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Originally Posted by dublniklz View Post
Oh, you mean sp's "dongle"?
I dont know if its called a dongle but you unplug the map sensor plug the fooler into the sensor then plug the factory harness into the fooler.

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same here, no wastegate connected for a long time now, I have the MAP Maximizer works great, 30-32 PSI is common, in fact it happens every day
Do you have any idle problems ie rough idle or lobeing?? I thought about getting this one but had heard that it makes the computer think you have full boost even at idle and was worried about that plus the SP one was like half the price.
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Old 03-29-2007, 09:49 PM
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nope none at all, I can say I am very happy with it. I'm not sure exactly what the MAP fooler "fools" the PCM into thinking, I thought it was a resistor that limited the voltage input to the MAP so the PCM never "sees" any more than 22 PSI. ...but I'm not really sure.
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Old 03-30-2007, 01:59 PM
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You guys that are seeing 30s at WOT, I assume everyone has tunes.
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