With Stock Turbo How Much Hp

**dynodave1** · 08-09-2009, 09:38 PM

Okay how much horsepower can a stock turbo make on fuel only, or maybe water meth injection??? I have a LB7 that wants to find the limits from the stock turbo. Thanks in advance. dynodave1

nwtdiesel · 08-09-2009, 09:41 PM

500-525hp with good EFI tune on fuel only.

PPE 220/Edge stack wont get you close. Hot+2 maybe 460-480hp

You will need a lift pump

Stock IHI only make 30-31psi, after that it will blow up.

**timespentsearching** · 08-09-2009, 09:44 PM

Quote:

Originally Posted by nwtdiesel

500-525hp with good EFI tune on fuel only.

Stock IHI only make 30-31psi, after that it will blow up.

the IHI on the LB7 with modded intake horn has made 536HP on stock single CP3 at danville. im working on a compressor wheel upgrade right now that will bolt right in, the wheel will flow 10-15% more air. with the modded intake horn and wheel you can probably get 550ish with 35-38lb of boost.

**dynodave1** · 08-09-2009, 09:46 PM

So right know my turbo is at the 31psi level. What will happen when she blows up? Now I'm scared to death.

nwtdiesel · 08-09-2009, 09:48 PM

Quote:

Originally Posted by dynodave1

So right know my turbo is at the 31psi level. What will happen when she blows up? Now I'm scared to death.

Get a new one.

Dont waste your time upgrading your IHI for 550ish HP. Get a 66mm and make 600hp with cool egt's:cool

**timespentsearching** · 08-09-2009, 09:48 PM

Quote:

Originally Posted by dynodave1

So right know my turbo is at the 31psi level. What will happen when she blows up? Now I'm scared to death.

compressor wheel startes breaking apart.

nwtdiesel · 08-09-2009, 09:57 PM

Get rid of the LB7 IHI.

The downpipes suck and even if you put a bigger compressor wheel in it the turbine wheel will be to small and you will have high drive pressures.

**dynodave1** · 08-09-2009, 10:00 PM

Will the debris enter the engine?

**timespentsearching** · 08-09-2009, 10:03 PM

Quote:

Originally Posted by nwtdiesel

Get rid of the LB7 IHI.

The downpipes suck and even if you put a bigger compressor wheel in it the turbine wheel will be to small and you will have high drive pressures.

Quote:

Originally Posted by dynodave1

Will the debris enter the engine?

i wouldnt argue with a larger turbo but for affordilbe, compressor wheel upgrade is not back as well as my 3.5 inch downpipe. bigger turbo always better though.

debris usually get stuck in the intercooler

nwtdiesel · 08-09-2009, 10:15 PM

Quote:

Originally Posted by dynodave1

Will the debris enter the engine?

99% no but it has happened before.