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Next step in modding
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slowsol
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PostPosted: Fri Jan 27, 2012 10:45 pm    Post subject:  Next step in modding Reply with quote

Im at a point where I need advice in my next step of modding. As of now I have a cai, 3.4, plog, 3"catless dp, 180 stat, overkill, 104's, and crap zzp wires. I'm getting some kr now with the new tune. I'm doing a scan over the weekend to see if anything pops up.

I'm thinking about headers(Speed Daddy w/ new flexpipe) or maybe 1.9 rockers. Just wondering the best bang for buck to kill this kr. The car runs awesome with the new tune, I'm just wanting to run worry free without having to "pulley up".

Thanks.
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IffyG
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PostPosted: Sat Jan 28, 2012 12:58 am    Post subject:   Reply with quote

Probably not what you want hear, but I'd either get a retune or a bigger pulley.

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chibiblacksheep
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PostPosted: Sat Jan 28, 2012 8:47 am    Post subject:   Reply with quote

I would definitely have the rockers, if that still isnt doing it for you, look at the headers.

Going straight to a 3.4 is never a great idea, all cars are different. I know some Monte L67 owners who needed an innercooler for a 3.4

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grimsin
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PostPosted: Sat Jan 28, 2012 9:24 am    Post subject:   Reply with quote

3.4 requires headers to run without KR/safely, you go any smaller you are gonna chip a piston or much worse,you could do it with your setup now... go back to a bigger puller or get headers and retune.

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slowsol
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PostPosted: Sat Jan 28, 2012 10:47 am    Post subject:   Reply with quote

I know jumping right to the 3.4 wasn't the greatest idea, but I'm here now and really like the power. I'm almost sure I will do the headers and rockers as a set. Looks like speed daddy and zzp modded rockers unless there is a better brand out there I don't know about.
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00impala123
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PostPosted: Sat Jan 28, 2012 12:53 pm    Post subject:   Reply with quote

how much KR are you getting now?

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slowsol
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PostPosted: Sat Jan 28, 2012 1:07 pm    Post subject:   Reply with quote

00impala123 wrote:
how much KR are you getting now?


Almost 5-6* at wot
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grimsin
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PostPosted: Sat Jan 28, 2012 2:33 pm    Post subject:   Reply with quote

is it really cold winter air? KR might go up in summer heat?

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IffyG
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PostPosted: Sat Jan 28, 2012 3:23 pm    Post subject:   Reply with quote

It doesn't matter what you want... it's what the car can run without the chance of chunking a piston... unless you can do something radical in a hurry to eliminate the KR be easy on the car or slap a bigger pulley on there until you can fix it.

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slowsol
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PostPosted: Sat Jan 28, 2012 3:37 pm    Post subject:   Reply with quote

IffyG wrote:
It doesn't matter what you want... it's what the car can run without the chance of chunking a piston... unless you can do something radical in a hurry to eliminate the KR be easy on the car or slap a bigger pulley on there until you can fix it.


My buddy just dropped off his autotap so I will go out either today or tomorrow and get a scan to see what's going on.
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IffyG
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PostPosted: Sun Jan 29, 2012 1:50 am    Post subject:   Reply with quote

Who tuned the car?

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slowsol
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PostPosted: Sun Jan 29, 2012 9:58 am    Post subject:   Reply with quote

IffyG wrote:
Who tuned the car?


It's an overkill tune. Here is a weird one, last night wife and I went to Stl for dinner, on the highway with cruise on 70 I would get small blibs of kr while not under load. It wasnt in boost at all, just at 1800 rpm or so and showing kr from .1-2.0. Very strange. When we got home I pushed the car to half throttle so I would be in boost and had 0kr.

The car is getting scanned today for sure. Could a bad plug or wire cause this?
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whitelightnin04MC
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PostPosted: Sun Jan 29, 2012 12:15 pm    Post subject:   Reply with quote

The car will run leaner in cruise than when you go into PE. The car should be richer when you go into boost and that's probably why you didn't see KR. Also, some cruise conditions can cause KR because of the torque converter. With the torque converter clutch locked, going up a slight incline while mildly accelerating can cause a high load to be placed on the engine.

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nightryder
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PostPosted: Sun Jan 29, 2012 10:58 pm    Post subject:   Reply with quote

whitelightnin04MC wrote:
Also, some cruise conditions can cause KR because of the torque converter. With the torque converter clutch locked, going up a slight incline while mildly accelerating can cause a high load to be placed on the engine.


^^^this. I used to get blips of KR all the time with the TCC locked, enabling PE based on cylinder air mass rather than throttle percentage completely cured it. It's not something that can be done (easily) on an off the shelf tune, just food for thought if you ever decide to start tuning your own car.

5-6* at WOT is pushing it. I would pulley up in the time being, it shouldn't effect the tune too much...you will notice it but it will still be much better than the tune you had before Laughing

If you are just concerned about running the 3.4, headers alone should get rid of the KR. If you want to add 1.9's then I think you will need a re-tune to get the most benefits from it.

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slowsol
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PostPosted: Sun Jan 29, 2012 11:20 pm    Post subject:   Reply with quote

I'm going to go ahead and get a set of speed daddy headers and a new flex pipe. If for some odd reason I can't get them ordered, would a 3.5 be a good enough jump or just do a 3.6? But I'm about 99% sure I'm placing an order for the headers and rockers. Any one want to buy a plog, coated crossover and 3" offroad dp? Hehe
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