OK So i have a gt3076r turbo stock internals and tuned for 370 whp at 24 lbs on 91 pump gas and i have the knock light so when im going wot i get knock on 3rd and 4th gear around 51/2 to 6 k but it doesnt happen all the time....and my tuner said if that ever happens take your foot off the gas and it will correct itself......... what can i do its been really bugging me ever since....i have no gauges so im screwed to know whats up with boost or a/f gonna get them soon..... help me out with the possibilitys tuner says i have a sensitive knock sensor........should i get retuned at another shop or leave as is? thanks in advance im still learning so help me out

 

Better get it check up as, serious knock will kill your engine

 

any other ideas not sure to believe its a sensitive knock sensor

 

first thing you need is to get yourself a boost gauge and a wideband...

 

i know will that tell me anything about my knock

 

It would be good to datalog with a wide band, and then check the tune in the areas you see elevated knock. If the A/F ratio is ok, then pull a little bit of timing to see if the knock goes away. Also, do you have a higher octane fuel available?

 

sounds like a good idea.....its available but hard to get

 

Boost gauge, wideband. Do yourself a favor, both instruments are way to cheap to not have them... Because it's simply so much valuable info in 2 gauges worth of $. They both act as brilliant failsafes too - when something strange is going on, you can notice it right away.

 

so those 2 are the main ones i should get? will i notice the knock on the gauges?

 

Who is your tuner anyway?

 

Well without a boost gauge you don't know where your boost is at, you might be overboosting and causing you to go lean and getting knock. Without the wideband you won't be able to tell if this is happening since you can't monitor your AFR's.

 

LANCEREvo9MR,

You need to log with a laptop.

 

throw in some race gas, see if you get the knock.

if you still do it maybe phantom knock. just hook up your laptop and log it. or at the load and rpm just pull timing.

 

if you really want to see what the problem is you need a laptop and just log the car, an AFR gauge would help cause if your running lean its a dead giveaway of a knock problem and like someone else said if your overboosting it can cause knock but you wouldnt know without a boost gauge

#1 boost gauge (the car is turbo this is a MUST)
#2 Wideband Air/Fuel Ratio Gauge
#3 Laptop with Evoscan or MitsuLogger and a Tactrix Cable

and what do you mean you have a knock lite installed, do you mean you have a patched ROM and your CEL flashs when you get knock? or that you have some other aftermarket knock lite

 

DR Gray From Road Race Engineering



i honestly dont know where to get race gas...all i know how to get is e85........and i have no idea how to take timing off

im gonna resort on getting my gauges soon as possible......where can i get evo scan and a tactrix cable?