I currently have zex plugs and i'm contemplating changing to denso iridum.


i've had an intermittent problem w/ my car not starting on the first try (maybe once a week). i'm not sure if it's the zex plugs or the unichip that causes the problem because they were installed at roughly the same time.

anybody have any opinions on which is better?







if i do go w/ the denso would i need the IK22?

 

On my car it has IK 22 and they are a great plug. As for your application I'm not sure?? Maybe IK22 or 20??

 

any other opinions?

 

I am using 1K20 a little cooler

 

are you getting nitrous, john?

 

Yes I believe he is.



Matt, I had the starting problems every now and then with the UniChip also. I know other people also experienced similar problems.

I use the IK22's with my current setup and the car starts on the 1st or 2nd crank everytime, even now at 86k miles

 

I think I am going to a 75 shot my best time is 14.10@100.70 union grove wi. I have every comptech product plus pulleys fuel pump adj. fuel reg.I do not have uni -chip or mugen cooling. What shot are you using and when do you hit NOS 1st gear or 2 gear and what RPM/
John

 

i have been running a 75 shot, and it doesn't activate until WOT. so i have to be careful and not floor it too soon or it will smoke the tires through 3rd gear.

i go out of the hole part throttle and when i feel i have enough traction i hit it. then it's time to hold on and hit the shifts.

 

I would assume each time you go to the track it would be diffrent, what RPM would you say you hit it and what kind of tires are you running.I am running michelon pilot sports havent had them to the track got then late nov.

John

 

As far as what plug I recommend, it depends if I'm lining up against you. If I am, I recommend Champion resistor plugs.

The Iridium's are a good solid plug and I don't think you can go wrong with them. What's the price difference between the plugs.

 

i can get zex for $38 shipped


and denso IK20's for $53 shipped


the zex aren't iridium, but they are designed for f/i and n2o.

 

can someone tell me which denso's to get if i want to be a heat range or 2 cooler than stock?

 

IK22 is 2 steps colder.