Test and tune today...

80 degrees
1000 ft
15mph headwind

Low ET 12.791@113.287

60ft 2.107 Yuk!
660ft 8.402

Pulled two bolts from downpipe to mid pipe creating a 1/2" gap releasing back pressure somewhat. Reduced pressure to 23psi on Dunlop SP5000s.

Horrible 60ft times are still limiting progress... Wheelspin a problem well past 60ft as crappy 1/8th mile would indicate. Its either wheelspin or bog then wheelspin. I can't seem to get it right. If I ever get the launch, I'll pickup another .3 or so.

I didn't expect the mph to increase the way it did, but the backpressure on the stock exhaust must be pretty limiting... the 4mph gained in the traps indicates there is a bunch of HP to be gained in this way. The NKG 3330 plugs with .030gap have also helped the top end by eliminating much of the detonation.

Still no dyno time or tuning done yet... Drag calculator would suggest around 380-420hp to the wheels.

We also got this one on video (spanking a modded mustang in the process!).... I'll try to post the video this week.


Jeff....Getting closer, man... If I had slicks I'd be pretty close now.... Tell Lance about this. He'll be flattered to see his handiwork being put to good use spanking around that Detroit stuff!

I didn't really think I could go this far on stock compression.

 

scott,

how's the idle with the ngk 3330's? im about to order some also....

-brian

 

They're great for making big power and for reducing detonation... Not so good for durability or idle quality. With them gapped way down to .030, mine will occasionally try to die out after a hot start or if you try to go to idle immediately after full boost. The oem plugs at stock gap didn't suffer any of these problems. Its a rare enough occurance with me, that the power is more than worth the slight drivability penalty. The 3330s DID make a difference in smoothness when digging into boost... it handles the boost curve better and results in smoother acceleration. Its amazing how much difference a plug can make on a boosted engine. The MKIV guys are talking about a 6097? plug and I may try that one out sometime.

Good luck...

Hows that project going?

 

starting the work tomorrow... actually on the supraforum there's been this big debate vs 6097 and 3330.. supposedly the 3330 isnt even for our cars... but, other than rough idle, it's the plug to use. not sure, i hear they dont last very long either... maybe try the HKS/Denso Idridium plugs? It sucks since changing spark plugs on our motors is such a bitch =) hopefully i can start hitting times equal to yours!

-brian

 

Scott, nice times....real nice MPH.

Bet the Mustang driver was in shock

Interesting on the exhaust tweak. You never know as sometimes a gap can create turbulence that actually hurts flow. Obviously, picking up 4mph indicates you are picking up power. Sounds like its time for a GOOD cat back. Can't remember, are you running drag radials?

 

Brian,

I may try the Iridums too... Lance at Toyomoto likes them (I would assume gapped down to accomodate the boost).

Nothing like removing the throttle body every 3-5k miles!

I didn't see much wear on the stock plugs though, and I ran them for around 3k miles without any deterioration.

The stock plugs were too high(?) a heat range and the 3330s are much colder(?) or is it backwards? I remember the heat range was a digit on the plug like -7 or something.

I think Jeff is running Iridiums.

e-mail me in private if you have any questions... Not sure who was doing the work on your rig.

 

Jbrady

Not DRs yet... People are suggesting BFGs the nittos aren't as sticky so they say.

60ft was 2.107---Not exactly stellar.
A 1.6 or 1.7 would be a good 60ft time for this car with DRs on it. That would put me at 12.29 or better as I now spin well past the 60ft mark.

I'm capturing the video now should have it up in about 20 minutes.

 

Good times Scott. Yes, the NGK 3330 is one heat range (7) colder than the stock heat range (6) as on the NGK scale, the higher the number, the colder the plug (as oppoped to the Bosch scale). The 3330 is used by all the big dog supras, including Powerhouse. The 6097's I have seen have all looked too hot. I have also used the Denso Iridiums in my car, but noticed no difference, other than my wallet being thinner. Iridium also takes longer to dissapate heat compared to both copper and platinum, with copper being the best.