surging after 10 k mod

[virgin stroker]

ok @ wot it surges around 60 or so.

the mod is deffinatly working as i feel a vast improvement. better shifting and higher boost.

disconnect the resistor and all is normal.

now why would it do that

[virgin stroker]

oh yeah i found that i need to replace my ips as it is oil soaked under the plug.

will do that tomorrow.

[jesilvas]

The 10k mod just fools the PCM into thinking that it's seeing less pressure in the oil rail than is actually there. So, it closes the IPR more, which raises ICP to what it 'thinks' should be there. Therefore, you have higher ICP.
If you have a leak, bad ICP, or other things, they will show up better with the higher pressures.
Also, the shifting has nothing to do with the resistor. The ICP does not control that.

[Trent97ford]

I sure like my 15.6 mod better mpg