Originally Posted by MHP

We can literally tune all models right now, I think we found an IS350 tester tonight. We need GS430/LS430 and IS250 testers asap.



If there is a delay yes we can improve upon it, how much depends on how large of a delay there is to begin with and what we find in the code. Regardless the difference is always significant.

Thanks

Originally Posted by DaveGS4

Juanca,

One thought I had for after you put your 200 miles on.... Do you know any other local IS-F owners that you might be able to do some side-by-side (or even car swapping back-and-forth between the two drivers) comparisons with?

Originally Posted by DaveGS4

Juanca,

One thought I had for after you put your 200 miles on.... Do you know any other local IS-F owners that you might be able to do some side-by-side (or even car swapping back-and-forth between the two drivers) comparisons with?

Originally Posted by Robs IS250

ill get both if my friends in Hi Profile if you need.. one has a custom catback and SRT intake and the other one is bone stock

Originally Posted by Juanca

As I told Andy last night over the phone, I'll be posting my experience with the tuned IS-F compared to how it was before the tune. Also this experience is not based on that I have to drive hard the first 200 miles, I always drive hard, with this car, with my previous cars, even with my wife cars (I hope she isn't reading this... LOL).

Well, I just put another 25 miles on the car, I'm at around 50 now. On my way to the office this morning I forgot to select SPORT mode (I always drive in SPORT but since I've been driving a different car these past days I didn't think about it) and when started to drive hard I said to my self "wait a second, it feels like before the tune (and I was referring as before WITH sport mode)". I noticed that the traction control was working a lot (something I forgot as well, I always disable traction control except when it's raining). That's when I realized that I forgot those 2 switches so I pulled over and went to TC off and SPORT. OMG, what a difference! Now driving in normal + manual is like before driving in sport + manual.

One of the roads that I take everyday in Miami is Okeechobee heading to Turnpike, 3 lanes per side with traffic lights every 2 miles, and almost no cars early in the morning. Well, I happened to see a 997 Porsche Carrera S moving fast on the same direction, and the traffic light ahead was red. I thought it'd be a good test to have a friendly run with this guy, but he took one lane and the other 2 were taken already, so I stopped behind him. The guy kept looking at me, I guess from his rear viewmirror he thought he'd smoke another Lexus, and even though I was behind he kept revving his car. Light turns green and he launched hard, my reaction wasn't immediate because I had to let him roll a liitle, then I nailed it (and of course I could get traction right away). He put maybe 2 cars on me but by ~40 mph I started to move faster (guys, we need better tires), by 80 mph I passed him HARD and by 100 mph he was maybe 3 cars length behind. My car definetely feels faster and stronger than ever. Again this might be subjective so I'll post new dyno charts from the same shop next week.

Last night I mentioned that shifting is very smooth, and I confirm it today, I have to double check on the screen that the car actually shifted when I pull the paddles, unbelievable.

I'll keep posting my thoughts.

Originally Posted by DaveGS4

Juanca,

I recall reading about similar issues when some folks have installed aftermarket HIDs after disconnecting the battery (here is one thread and what he did to resolve it)

https://www.clublexus.com/forums/is-...-hid-fogs.html

and recalled this one from the 2IS FAQ
https://www.clublexus.com/forums/is-...isconnect.html

Originally Posted by GILLEXUS

Andy,
Is MHP tune only for naturally aspired engines? Anything different if car is driven in high altitude areas?

Originally Posted by DRE1615

So Andy I have a question. First of all let me say great job so far.

I'm not sure if this relates, but would it be better to wait to tune if one was planning on purchasing an exhaust and/or intake? Whether it be a JoeZ or a full MHP exhaust with longtubes, could you create a more optimal tune for an ISF with a more free flowing intak/exhaust combo? Or will an intake and exhaust just compliment the stock tune well enough? Again, I'm not sure if these parts actually will respond any differently to an ECU tune.

So is it worth waiting for a SECOND tune that will better optimize the future "aftermarket" or is this the end of the line as far as ISF tuning goes?

Thanks in advance for your attention to my questions.

Originally Posted by DFLORES

well i am starting to come around as i look further i see that a tune is very important, but should i just wait till i mod the cars exhaust and intake then tune or will you have a tune plan where i can come back and pay less to re modify the existing tune?

Originally Posted by MHP

You can go either route, but ultimately what needs to be changed if anything will be determined based on the hard parts being used. For instance if you just added a catback we wouldn't need to change anything. However if you went with our full exhaust (LT to tailpipe) we'd need to tweak A/F. We make these changes (as far as bolt-ons go) for free for existing customers. If you want a seperate tune for nitrous, H/C, etc. please call/PM/email to discuss pricing.