FATS times after 2.8 cams and tuning

[LightningLou]

Big shout out to Josh at SMS! Car was down for a bit due to the crappy 1-2 shift collar that I finally got around to fixing with the JHM kit. I figured I might as well throw in some 2.8 cams for shits and gigs while the engine was out to see how the car would react. Looks like it made a pretty significant difference and really didn't affect the power band at all once tuned. This mod seems to really help the car breathe up top which I like. I also have no affiliation whatsoever with Josh or Solo, I'm just a happy customer with a happy S4. I have been working with Josh for some time now in order to fine tune the factory ECU in my S4 and make it the incredibly strong and reliable car it is today. He has really done wonders to make this car the beast it is today and I would highly recommend him and the rest of the crew at SMS for any tuning needs. I went from running a very respectable 3.0 FATS time in hot ass Florida before cams, to this time that I ran this morning on a completely flat concrete road near my house in mild 66 degree weather... I don't have the joy of running in 30-40 degree weather anymore like you guys up north.



For all you number gurus who love raw data... Sorry I suck at making line graphs. 4th line from the right is the time stamp and 3rd line from right is RPM's.




By the way, this is on a stock block early 2000 APB with 24psi spike and hold on E85. Not too shabby huh?

[f4m0u5]

Big shout out to Josh at SMS! Car was down for a bit due to the crappy 1-2 shift collar that I finally got around to fixing with the JHM kit. I figured I might as well throw in some 2.8 cams for shits and gigs while the engine was out to see how the car would react. Looks like it made a pretty significant difference and really didn't affect the power band at all once tuned. This mod seems to really help the car breathe up top which I like. I also have no affiliation whatsoever with Josh or Solo, I'm just a happy customer with a happy S4. I have been working with Josh for some time now in order to fine tune the factory ECU in my S4 and make it the incredibly strong and reliable car it is today. He has really done wonders to make this car the beast it is today and I would highly recommend him and the rest of the crew at SMS for any tuning needs. I went from running a very respectable 3.0 FATS time in hot ass Florida before cams, to this time that I ran this morning on a completely flat concrete road near my house in mild 66 degree weather... I don't have the joy of running in 30-40 degree weather anymore like you guys up north.



For all you number gurus who love raw data... Sorry I suck at making line graphs. 4th line from the right is the time stamp and 3rd line from right is RPM's.




By the way, this is on a stock block early 2000 APB with 24psi spike and hold on E85. Not too shabby huh?

Very nice! I am also running a sms tune, and have had josh help me out and figure out a boost problem that wasn't throwing codes, another +1 for josh and sms

[aysix]

what turbos? lol

[LightningLou]

what turbos? lol

FTG RS4/RS6 billet hybrids... Haters gonna hate lol

[LightningLou]

Very nice! I am also running a sms tune, and have had josh help me out and figure out a boost problem that wasn't throwing codes, another +1 for josh and sms

You are in good hands brotha! He knows his stuff and has helped me out a bunch as well. I hope to put the car on their dyno soon and see what she's putting down

[AudiSportB5S4]

Using VCDS to measure time difference between RPMs is not ideal since the sample rate sucks. How does that calculate the time? Does it take that into account? Regardless, so long as you can feel the difference that's all that matters!

[NOTORIOUS VR]

Using VCDS to measure time difference between RPMs is not ideal since the sample rate sucks. How does that calculate the time? Does it take that into account? Regardless, so long as you can feel the difference that's all that matters!

Especially since he is logging more then one line @ a time.

[LightningLou]

Using VCDS to measure time difference between RPMs is not ideal since the sample rate sucks. How does that calculate the time? Does it take that into account? Regardless, so long as you can feel the difference that's all that matters!

I agree the sample rate is awful in VCDS especially when logging more than one block at a time. The time stamp and rpm does not get affected though in any way. The fats excel document will find the average which is why they ask for the time and rpm above and below 4200 and 6500 for VCDS users. I have been using this for all my runs and they are always within a hundredth of each other in the same conditions and road.

[SoloMotorsports]

Big shout out to Josh at SMS! Car was down for a bit due to the crappy 1-2 shift collar that I finally got around to fixing with the JHM kit. I figured I might as well throw in some 2.8 cams for shits and gigs while the engine was out to see how the car would react. Looks like it made a pretty significant difference and really didn't affect the power band at all once tuned. This mod seems to really help the car breathe up top which I like. I also have no affiliation whatsoever with Josh or Solo, I'm just a happy customer with a happy S4. I have been working with Josh for some time now in order to fine tune the factory ECU in my S4 and make it the incredibly strong and reliable car it is today. He has really done wonders to make this car the beast it is today and I would highly recommend him and the rest of the crew at SMS for any tuning needs. I went from running a very respectable 3.0 FATS time in hot ass Florida before cams, to this time that I ran this morning on a completely flat concrete road near my house in mild 66 degree weather... I don't have the joy of running in 30-40 degree weather anymore like you guys up north.


By the way, this is on a stock block early 2000 APB with 24psi spike and hold on E85. Not too shabby huh?

Thanks for the kind words... we're glad you are enjoying the tune

[LightningLou]

Thanks for the kind words... we're glad you are enjoying the tune

No problem... Looking forward to taking the car up there to get some dyno pulls in soon.

[rnagy86]

Same FATS here on E85 and K04s so meh ... nothing special

[LightningLou]

Same FATS here on E85 and K04s so meh ... nothing special

Oh cool well post up some logs cause I'd like to see that.

You also have to keep in mind this time is in 70 degree weather... I'm sure I could easily knock off a tenth or two if it were 40 degrees out.

[mikay1814]

Same FATS here on E85 and K04s so meh ... nothing special

In an RS4?

[rnagy86]

Yes it's an RS4, yes it has shorter 3rd gear but that is only .2 seconds max. difference, not including the fact that my car is 1800kg without a driver.
Even if the .2 seconds would be valid, that does not really count on the street. This was in August in ~85F.

[FlyboyS4]

Even if the .2 seconds would be valid, that does not really count on the street.

0.2 seconds in that time range is more significant due to the non-linear relationship between FATS time and power.

[DieselElectric]

Yes it's an RS4, yes it has shorter 3rd gear but that is only .2 seconds max.

You say that as if .2 seconds is a negligible difference in FATS time.

Also, 3rd gear isn't the only difference. It's ridiculous to compare your FATS to his and brag about being unimpressed. Your RS4 has a shorter 3rd gear, better intake and heads, and yet your unimpressed that your genuine Borg Warners combined with all those advantages isn't pumping out a faster time than his eBay setup?

Meh.

[demonmk2]

^^damn......lol

[LightningLou]

You say that as if .2 seconds is a negligible difference in FATS time.

Also, 3rd gear isn't the only difference. It's ridiculous to compare your FATS to his and brag about being unimpressed. Your RS4 has a shorter 3rd gear, better intake and heads, and yet your unimpressed that your genuine Borg Warners combined with all those advantages isn't pumping out a faster time than his eBay setup?

Meh.

Exactly thanks for clarifying. I have no RS4 intake bits on my car at all... Stock untouched 2.7 heads, stock block, stock gear ratio, VMR V710 18" wheels, stock early intake manifold, stock throttle body, stock y-pipe, etc.

[rnagy86]

I went from a Stage 3 s4 avant (K04s, RS4 Y-pipe, ER coolers, all else is stock) to an RS4 and with the exact same tune the RS4 ran .2 faster on the same road, on the same day.
At K04 power levels the "extra" rs4 stuff like intake and heads make so small of a difference in real life, that it does not really matter.
Don't forget that you are running 2.8 cams, and not s4 ones, so your intake is not stock either.
I am not bragging at all, lots of people on here have really fucking nice setups, but from an RS4/RS6 hybrid on E85, I'd have expected
more. So still meh, nothing special in this thread.

[LightningLou]

I went from a Stage 3 s4 avant (K04s, RS4 Y-pipe, ER coolers, all else is stock) to an RS4 and with the exact same tune the RS4 ran .2 faster on the same road, on the same day.
At K04 power levels the "extra" rs4 stuff like intake and heads make so small of a difference in real life, that it does not really matter.
Don't forget that you are running 2.8 cams, and not s4 ones, so your intake is not stock either.
I am not bragging at all, lots of people on here have really fucking nice setups, but from an RS4/RS6 hybrid on E85, I'd have expected
more. So still meh, nothing special in this thread.

The only difference was the 2.8 cams, which is why I posted in here that it knocked off .2 from my FATS time... Everything else in the intake tract is stock besides that except for the 90mm Hitachi MAF tube to accommodate the extra flow. There is plenty more to be had, but I am not looking to vent this block at the moment. Thanks for your comments.

[mikay1814]

The only difference was the 2.8 cams, which is why I posted in here that it knocked off .2 from my FATS time... Everything else in the intake tract is stock besides that except for the 90mm Hitachi MAF tube to accommodate the extra flow. There is plenty more to be had, but I am not looking to vent this block at the moment. Thanks for your comments.

Maybe I missed it somewhere, but just making sure... Your bottom end is completely stock?

[LightningLou]

Maybe I missed it somewhere, but just making sure... Your bottom end is completely stock?

Yes, bottom end is completely stock.


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[Meow]

The only difference was the 2.8 cams, which is why I posted in here that it knocked off .2 from my FATS time... Everything else in the intake tract is stock besides that except for the 90mm Hitachi MAF tube to accommodate the extra flow. There is plenty more to be had, but I am not looking to vent this block at the moment. Thanks for your comments.

0.2 off fats is a decent chunk if the weather and road conditions were the same. Good stuff man. Not bad for drop in cams, was the tune dialed in for a different variable cam switching point? (if you know, sometimes customers dont know/care about the details)

[Audi9]

I went from a Stage 3 s4 avant (K04s, RS4 Y-pipe, ER coolers, all else is stock) to an RS4 and with the exact same tune the RS4 ran .2 faster on the same road, on the same day.
At K04 power levels the "extra" rs4 stuff like intake and heads make so small of a difference in real life, that it does not really matter.
Don't forget that you are running 2.8 cams, and not s4 ones, so your intake is not stock either.
I am not bragging at all, lots of people on here have really fucking nice setups, but from an RS4/RS6 hybrid on E85, I'd have expected
more. So still meh, nothing special in this thread.

Right, because better heads, cams, intake manifold, TB, airbox and gearing would have never helped the car achieve a faster time.

You must realize how ridiculous your argument/logic is

[Smokin Joe]

Right, because better heads, cams, intake manifold, TB, airbox and gearing would have never helped the car achieve a faster time.

You must realize how ridiculous your argument/logic is

Don't forget the better intercoolers the RS4 has. In warm weather that could make for a big difference.

OP, did you notice much of a drop in mid range power with the 2.8 cams? I have a set that I want to throw on but don't want to give up mid range.

[Meow]

Don't forget the better intercoolers the RS4 has. In warm weather that could make for a big difference.

OP, did you notice much of a drop in mid range power with the 2.8 cams? I have a set that I want to throw on but don't want to give up mid range.

No one should be running stock intercoolers on larger than k03 turbos. I hope the rs4 isn't on stock intercoolers either because they aren't that good...

[Audi9]

^left out the intercoolers and y-pipe because he said the s4 had ER intercoolers and rs4 ypipe

[Smokin Joe]

^^^ Ah, I missed that.

[LightningLou]

0.2 off fats is a decent chunk if the weather and road conditions were the same. Good stuff man. Not bad for drop in cams, was the tune dialed in for a different variable cam switching point? (if you know, sometimes customers dont know/care about the details)

Not sure on the full details of the cam timing, but I know the tune was optimized to take advantage of the 2.8 cams.

Don't forget the better intercoolers the RS4 has. In warm weather that could make for a big difference.

OP, did you notice much of a drop in mid range power with the 2.8 cams? I have a set that I want to throw on but don't want to give up mid range.

No loss in low end or mid range at all after the tune. Definitely a good upgrade from the stock cams if you have larger than stock turbos.