Originally Posted by raver0789

This turbo interests me alot, i'm excited to see what it can do.

Ford, (username) ran up to 506whp full e85 on the s256et with just stage 1 cams, before running out of fuel.

Originally Posted by raver0789

Funny. I didn't tune him, it was silverbullet08, taylor englund from hpunlimited. He's on hptuners all the time, i'm sure you know the name.

Knowing the fuel limitations of my own car on race gas, 506whp on e85 would have been absolutely impossible. But every car is different.

Cobalt SS/TC dyno S256 - YouTube

Seems like everyone forgot about his guy.

Originally Posted by Matt M

We are including a note with the 7163 turbos that we ship, but I just want to post it here so more of you know. We are running the high pressure wastegate canisters on the 7163. We include medium pressure canisters on the 6758. This means that the duty cycle chart in the ECM must be adjusted differently with this turbo. To start out, I subtract 25% from the entire chart and set the max duty cycle to 75%. Be careful, because you can find yourself hitting 30psi boost in a hurry if you run a 6758 tune file with the 7163.

Originally Posted by billythakid

@matt so after the install can you still drive the car or do you need to tune it that day?

Originally Posted by Terminator2

Every car is different by a little but still 506whp on full E-85 and stock injectors is crazy. That is like saying you can make 600whp on race gas on stock injectors with just cams. I have done a ton of cars and not one would support that kind of power on E-85 with just cams not without leaning it out to the point of no enrichment happening in PE.

Originally Posted by billythakid

Ok so I just got my car back from gm all stock bring it back tomorrow but wanna see what yall think is the problem. Woke ok git in the car on interstate and at full boost 15psi is felt really slow like it was being held back thought let me try to reset the ecm got back on interstate pulled hard and ran fine next day did it again reset and it pulled hard again what do yall think is the problem thanks

Originally Posted by Terminator2

Scan for pending codes but MAP sensor is most likely the issue.

Originally Posted by billythakid

Ok so I just got my car back from gm all stock bring it back tomorrow but wanna see what yall think is the problem. Woke ok git in the car on interstate and at full boost 15psi is felt really slow like it was being held back thought let me try to reset the ecm got back on interstate pulled hard and ran fine next day did it again reset and it pulled hard again what do yall think is the problem thanks

Originally Posted by Wert842

15lbs on an all stock car and slow?

...There's nothing wrong with it.

Originally Posted by billythakid

But why after I undo the battery and get back in theres a power qain and runs alot better also when it starts running funny it starts to boost higher at higher rpms for example it would spike 15 then creep up higher the rpms climb

Originally Posted by Wert842

Aliens dude. All in the butt dyno would be awesome for a log or something.

Originally Posted by raver0789

Anyone logged any of these bad boys yet? How did it go? It's too cold up here I'm going to have to wait for spring to see one.

Originally Posted by billythakid

Installed my 7163 last Sunday and finishing the tuning tomorrow

Originally Posted by Wert842

keep us posted. Any info on spool time and have anything to compare it to?

Originally Posted by billythakid

James was saying it spools very similar to the 6758. Had to ramp it.
And is good for 35psi im only on 26/27 pounds on 93 doing a 3.8 from 60-100 I posted it on cobalt ss gangs facebook page