14-psi tune update .. followup.

[Vortech347]

3300 rpm?  Wow.  I thought 2500 rpm was pretty much the max for stock bb launches.

It was by pure accident, I was boosted to 2300 and foot suck on my old mat for a second .. it made horrificly bad noises and wheel hop.

Don't do it.

BUT! brakes held just fine

If I flash anything higher than around 2400 mine will save itself, dump boost and close the TB.

 

[f8tlSHO]

3300 rpm?  Wow.  I thought 2500 rpm was pretty much the max for stock bb launches.

It was by pure accident, I was boosted to 2300 and foot suck on my old mat for a second .. it made horrificly bad noises and wheel hop.

Don't do it.

BUT! brakes held just fine

If I flash anything higher than around 2400 mine will save itself, dump boost and close the TB.

Yeah I have had this happen, just goes limp when you leave the line...


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[derfdog15]

I think your air is hurting your times a LOT. My SHO on straight 93 ran a best of 12.87 with CAI, weld-in mufflers, and an Airaid. Temp was mid -high 50s and it was an evening run with a reasonable DA.

 

[TopherSho]

I think your air is hurting your times a LOT. My SHO on straight 93 ran a best of 12.87 with CAI, weld-in mufflers, and an Airaid. Temp was mid -high 50s and it was an evening run with a reasonable DA.

Yeah.. i know if i drop in new DP,s and catback it will fix it,  but my warranty still has 3 more years on it and it covers exhaust as well as turbos and extra bits.  When i am under 2 years warranty i will probably go big and do the pipes, full exhaust and a meth kit tune.

 

[f8tlSHO]

I think your air is hurting your times a LOT. My SHO on straight 93 ran a best of 12.87 with CAI, weld-in mufflers, and an Airaid. Temp was mid -high 50s and it was an evening run with a reasonable DA.

Yeah.. i know if i drop in new DP,s and catback it will fix it,  but my warranty still has 3 more years on it and it covers exhaust as well as turbos and extra bits.  When i am under 2 years warranty i will probably go big and do the pipes, full exhaust and a meth kit tune.

You don't need downpipes and catback to go fast...I think derf was referring to your altitude maybe.


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[TopherSho]

Hmm I'm almost sea level..

 

[f8tlSHO]

Hmm I'm almost sea level..

Dunno then, I'm almost sea level also.. 12.9 with just 93 tune filter and 3bar


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[TopherSho]

Hmm I'm almost sea level..

Dunno then, I'm almost sea level also.. 12.9 with just 93 tune filter and 3bar


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Yeah i am out of ideas as well on this.  All i can think now is my 20's are a issue with rotation mass on launch,  and I lose a lot more HP at the tail end of my dyno than other people do. 

well see tonight what 85% water does in regards to keeping spark up.  I am not expecting much to be honest.  well see though.  I don't want to go meth tune .. but i might..

 

[TopherSho]

Running 13.4x at Woodburn today.

Temp of box asphalt is 140f,.  Lanes are 110

IAT sensor is only recoding a 40f.  Drop from 160f

I have to drill and tap my intake .. since snow mentioned 6" from IAT to get it wet that's my only option as next nozzle is to big

Slips and a log later

 

[TopherSho]

Using temp gun iat2 housing is 175+ f

 

[ajpturbo]

Running 13.4x at Woodburn today.

Temp of box asphalt is 140f,.  Lanes are 110

IAT sensor is only recoding a 40f.  Drop from 160f

I have to drill and tap my intake .. since snow mentioned 6" from IAT to get it wet that's my only option as next nozzle is to big

Slips and a log later

Your mission should not be to get the MAP/IAT2 sensor "wet"....I wouldn't drill anything into the intake manifold...Just not necessary..I would put the nozzle in the inlet pipe just before the throttle body like most people do...You want to cool the air not get any sensor "wet"..When the mix gets cooled the IAT2 sensor will see it and spark compensations will be applied.

Without the Meth "tune" you are only going to get a little extra spark from what the IAT comps are giving you back...The tuning would add some spark to the base spark tables and take advantage of any boost in octane from the meth that is in your washer fluid

 

[StealBlueSHO]

No one has needed to drill into their manifold for meth... unless you are doing direct injection....

I spray right before the throttle body... like most do...

Could see if brad is willing to ease up a hair on the IAT comps...


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[polskifacet]

Also think about adding a second nozzle a little bit further away so the water has more time to mix with the air. Unfortunately the plastic pipe near the throttle body is fairly small. another idea would be to have a couple solenoids to purge or recirculate fluid so you can put ice in that tank.

 

[TopherSho]

Thanks guys, i totally get what you are saying.  I am plugged in about 4 inches back from where most are plugging in.  I have a bung in a collar that we spliced into the rubber hotpipe... i wonder if it is too far away. (picture later... tired)

Snow was very specific that the IAT2 was to get damp.. but not soaked.  so i am confused a bit as their install guide was very specific to be before the throttle blade. And also wondering if 4 additional inches makes that much of a difference ??  /shrug/  I was avoiding the need to replace the plastic portion of the hoptpipe but it may be i need to after all.

Water injection WAS doing a good deal of the intended work, I was beating out cars above my weight class because they were running much hotter.  I could see it drop from 160 to 120 about 50% into the run. 

I was expecting a greater drop sooner i guess..

 

[TopherSho]

Log. 

it does show the IAT dropping from 150 to 112.  So i get my spark back.. But it is much to late to be of serious benefit i think.  the initial spark at launch is what killed my times a bit i think.

this pretty much settles it.

I need to either get a CFN card and pump my own fuel for e30 and use the kit for temps.  or go balls deep into a meth tune.

i hate to spend the $$ on the kit and not tune for it but i am terrified of a pump failure taking out the pistons/rods/crank with massive pre-ignition.    in my head the e30 tune is a safer deal... ??

thoughts???

I do think tonight was a success.  i beat out some decent rigs,  amg c55, modded sti's, 2 g8's, RT challengers, the water was helping, but i think it is not ideal. yet.

 

[TopherSho]

 

[TopherSho]

Here is where the bung is located... Bad? OK? good? cheese?

 

[StealBlueSHO]

I personally like it in front of the noise maker... that has to disrupt the airflow in order to make the noise... which means meth is probably getting sucked into it...


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[ajpturbo]

I think you are fine....No need to tap your mani...You are a bit further downstream than most but I don't think it's bad because that probably gives it time to mix more evenly in the air charge.

 

[TopherSho]

Outside of e30 or tuning the meth or hardware am I at my limit?