[e.n335]

Originally Posted by kyleh4852

Oh no, Eugen mentioned all of the products....

[5soko]

Originally Posted by Nikolas

Why only Terry's? I mean Procede, AA and others were also mentioned?

well, being this site is so biased, i dont rely on a maker of a product for unbiased info. i never have.

i should have repharsed what i did say. my cuzin owns a jb2, so im not agnist it in any way or form.

[Terry335]

Originally Posted by 5sokol335icoupe

well, being this site is so biased, i dont rely on a maker of a product for unbiased info. i never have.

i should have repharsed what i did say. my cuzin owns a jb2, so im not agnist it in any way or form.

Didn't mean to derail the thread, just wanted to let that road race guy know the benefits of the richer air/fuel ratios. But if he road races as much as he says he does he probably changes his brake pads every race, so 10-15 more min of install time shouldn't be a huge issue.

[Bubbles]

Well, not ALL products....

[SCCAForums.com]

Originally Posted by Terry335

Didn't mean to derail the thread, just wanted to let that road race guy know the benefits of the richer air/fuel ratios. But if he road races as much as he says he does he probably changes his brake pads every race, so 10-15 more min of install time shouldn't be a huge issue.

You're right... I do... And bleed them every session... but the 335i for me is just a daily driver... I'm trying to not go 10 tenths with this car (as I don't think it's meant for that). So to me... the cleaner plug & play is it for me.

But hey... I've not even had the car 1 month... so who knows how I'll feel in 6 months!

Happy New Year,
Dave

[radgator1]

Originally Posted by 5sokol335icoupe

lets keep your product out of this thread.

That's funny since his post is the only reply in this thread with any useful technical info. Try reading it again, you can't add fuel by only manipulating the TMap sensor.

[jon@themshop]

Hey guys and Happy New Year!

From what I know so far is that Split Second is still doing R&D/testing on the stage 2 SSTT. For those with the current SSTT the Stage 2 will be an add on. ETA is a few months from now. Pricing is TBD.

[ChaneRZ]

i like add on

[ulises 335i]

is it for race gas only?

I would prefer if it was compatible with 91

[BzzzBom]

Originally Posted by radgator1

That's funny since his post is the only reply in this thread with any useful technical info. Try reading it again, you can't add fuel by only manipulating the TMap sensor.

This is my understanding and please comment if I am wrong. The SSTT increases boost which the ECU sees as stock boost. However, if the increase in actual boost changes the AFR as determined by the Oxygen sensor the ECU will add more fuel. If this is true, does it matter if the piggyback directly adjusts the AFR? There are hundreds of SSTIs in use and I have not seen one post where the car had a CEL, Check engine soon warning, or went into limp mode. If the car was running too lean I would expect to see a CEL. The Xede and Procede units adjust timing, fuel and boost but there are numerous posts regarding CEL and limp mode. I have not driven a Procede car but have driven cars with Xede as well as SSTT. My butt dyno says they feel the same.

[jon@themshop]

Originally Posted by ulises 335i

is it for race gas only?

I would prefer if it was compatible with 91

No you can use 91 but obviously anything higher will yield better results.

[T Bone]

Originally Posted by jon@themshop

Hey guys and Happy New Year!

From what I know so far is that Split Second is still doing R&D/testing on the stage 2 SSTT. For those with the current SSTT the Stage 2 will be an add on. ETA is a few months from now. Pricing is TBD.

Ah....different sensor.... Just like the Borg as I predicted

[sdiver68]

Originally Posted by BzzzBom

This is my understanding and please comment if I am wrong. The SSTT increases boost which the ECU sees as stock boost. However, if the increase in actual boost changes the AFR as determined by the Oxygen sensor the ECU will add more fuel. If this is true, does it matter if the piggyback directly adjusts the AFR? There are hundreds of SSTIs in use and I have not seen one post where the car had a CEL, Check engine soon warning, or went into limp mode. If the car was running too lean I would expect to see a CEL. The Xede and Procede units adjust timing, fuel and boost but there are numerous posts regarding CEL and limp mode. I have not driven a Procede car but have driven cars with Xede as well as SSTT. My butt dyno says they feel the same.

As long as boost is not being raised above the ECU's ability to compensate with fuel, the answer is no it does not matter.

As you raise boost above the levels where the ECU can compensate, then yes it matters. Same with timing.

[Terry335]

Originally Posted by BzzzBom

This is my understanding and please comment if I am wrong. The SSTT increases boost which the ECU sees as stock boost. However, if the increase in actual boost changes the AFR as determined by the Oxygen sensor the ECU will add more fuel. If this is true, does it matter if the piggyback directly adjusts the AFR? There are hundreds of SSTIs in use and I have not seen one post where the car had a CEL, Check engine soon warning, or went into limp mode. If the car was running too lean I would expect to see a CEL. The Xede and Procede units adjust timing, fuel and boost but there are numerous posts regarding CEL and limp mode. I have not driven a Procede car but have driven cars with Xede as well as SSTT. My butt dyno says they feel the same.

FWIW the AFR does not change, just the actual amount of fuel entering the engine. Say one were to "clamp" a map signal and run boost up to 18psi with no other changes, you would hit the factory air/fuel ratio targets of 14.5ish in the midrange down to 12.5ish at the very top. But those ratios are only meant for much smaller amounts of boost. So the car would get some KR and pull timing. In that case enough to throw a limp mode. Maybe if boost was set to 13psi it would pull timing, but not enough to throw a limp mode. The car would just make less power than if it were running more appropriate air/fuel ratios (like say 13:1 in the midrange and 12:1 up top).

Unfortunately most people don't know or care how things actually work and I'm really not on a mission to educate them, but if you want to adjust the air/fuel ratios in this car you need to bias the o2 sensor signal.

[midlife]

subscribed

Originally Posted by e.n335

The bad thing of high octane tunes is that you will get in trouble without high octane gas. Terry solved this problem with the "R" switch. I hope the SSTT will come up with a similar fallback solution.

Functions:

- SSTT is correcting boost only
- JB2 is correctiong boost and fuel
- AA Xede, PROcede and hopefully the Attaché are correcting boost, fuel and timing. Keeping an eye on the Attaché progress I see it is not trivial to develop a good piggyback solution for the 335i.

IMO just increasing the boost is not an adequate tuning solution for the 335i. I have been impressed about the JB2 and still retain with the PROcede V2, hoping that all current issues are solved until March / April 2008. If not, I have to change the engine performance tuning to come to an end and being able to continue with FMIC, DP's and so on. I don't want to mix up any issues, so the engine performance tuning has to work rock solid on an otherwise stock car first.

To the thread: Just another teaser with no content

- Eugen

[BzzzBom]

Originally Posted by Terry335

FWIW the AFR does not change, just the actual amount of fuel entering the engine. Say one were to "clamp" a map signal and run boost up to 18psi with no other changes, you would hit the factory air/fuel ratio targets of 14.5ish in the midrange down to 12.5ish at the very top. But those ratios are only meant for much smaller amounts of boost. So the car would get some KR and pull timing. In that case enough to throw a limp mode. Maybe if boost was set to 13psi it would pull timing, but not enough to throw a limp mode. The car would just make less power than if it were running more appropriate air/fuel ratios (like say 13:1 in the midrange and 12:1 up top).

Unfortunately most people don't know or care how things actually work and I'm really not on a mission to educate them, but if you want to adjust the air/fuel ratios in this car you need to bias the o2 sensor signal.

So are you saying that the SSTT works fine for the moderate amount of boost it achieves but if you want more boost you should go to a system which can adjust the AFR such as the JB? Terry, thanks for your reply

[BzzzBom]

Originally Posted by Terry335

FWIW the AFR does not change, just the actual amount of fuel entering the engine. Say one were to "clamp" a map signal and run boost up to 18psi with no other changes, you would hit the factory air/fuel ratio targets of 14.5ish in the midrange down to 12.5ish at the very top. But those ratios are only meant for much smaller amounts of boost. So the car would get some KR and pull timing. In that case enough to throw a limp mode. Maybe if boost was set to 13psi it would pull timing, but not enough to throw a limp mode. The car would just make less power than if it were running more appropriate air/fuel ratios (like say 13:1 in the midrange and 12:1 up top).

Unfortunately most people don't know or care how things actually work and I'm really not on a mission to educate them, but if you want to adjust the air/fuel ratios in this car you need to bias the o2 sensor signal.

Sorry - One more question. When the stock 335i (no piggyback) need to increase boost for high altitudes, does it alter the AFR or just add more fuel for the higher level of boost while keeping the AFR the same??

[Terry335]

Originally Posted by BzzzBom

So are you saying that the SSTT works fine for the moderate amount of boost it achieves but if you want more boost you should go to a system which can adjust the AFR such as the JB? Terry, thanks for your reply

I'm not here to endorse any particular product or tuning style, except maybe my own, but their tuning seems to work fine as evidenced by the many users here. The style appears very similar to my JB1 product.

[Terry335]

Originally Posted by BzzzBom

Sorry - One more question. When the stock 335i (no piggyback) need to increase boost for high altitudes, does it alter the AFR or just add more fuel for the higher level of boost while keeping the AFR the same??

The AFR stays basically the same regardless of altitude and temperature. There are minor variations but its effectively the same, within 2/10ths of a point.

[BzzzBom]

Originally Posted by Terry335

I'm not here to endorse any particular product or tuning style, except maybe my own, but their tuning seems to work fine as evidenced by the many users here. The style appears very similar to my JB1 product.

Thanks again for your prompt reply. Your frank and educational comments are sincerely appreciated and are a bigger endorcement of your product than any other form of advertisement. Does the JB1 or JB2 have as many CEL and limp mode issues as other piggybacks? If not, what are you doing different? Congrats on your products, your input on these forums and great pricing.

[Terry335]

Originally Posted by BzzzBom

Thanks again for your prompt reply. Your frank and educational comments are sincerely appreciated and are a bigger endorcement of your product than any other form of advertisement. Does the JB1 or JB2 have as many CEL and limp mode issues as other piggybacks? If not, what are you doing different? Congrats on your products, your input on these forums and great pricing.

Hi this really isn't my thread, but if you start another I'd be happy to go in to detail on how my products work.

[KEVIN88GT]

::tracking thread.... wonder what the details on the SSTT2 are::