Originally Posted by
lzylst
Ok, no more MIL/CEL (fixed). I have tried two different virgin p28's and both allow redline to go past 7200. I stopped at 7500rpm because of potential valve float on stock springs.
Could my OEM tachometer be off the mark by that much?
Yes considering the ecus are supposedly oem.
I have seen an aem tach be off by up to 800 rpms.