Innovate (Sprintex) Supercharger Owners Topic

[Fizz]

Anyone here using the Delicious 8.65 version tune, and have throttle hesitation issues at low revs? In my case when moving off quickly from a standstill...as soon as I release clutch pedal and get on the throttle, it surges forwards as you'd expect, but then momentarily jerks/bogs down a little (around the 2200-2400rpm area) before picking up revs again. The only way to take off smoothly without the car jerking is to carefully let off the clutch doing it slower than I would normally do previously.

Same thing also happens during in-gear rolling acceleration if I get on the throttle too quickly at low revs.

Contacted Bill and he said he's working on a 8.75 update which should sort this out....but I'm just wondering if anyone else is experiencing the same issue as me?

By the way I've already checked all hoses and fittings....no leaks.

[CK_Bladesmith]

Originally Posted by Fizz

Anyone here using the Delicious 8.65 version tune, and have throttle hesitation issues at low revs? In my case when moving off quickly from a standstill...as soon as I release clutch pedal and get on the throttle, it surges forwards as you'd expect, but then momentarily jerks/bogs down a little before picking up revs again. The only way to take off smoothly without jerking is to carefully let off the clutch.

Same thing also happens during in-gear rolling acceleration if I get on the throttle too quickly at low revs.

Contacted Bill and he said he's working on a 8.75 update which should sort this out....but I'm just wondering if anyone else is experiencing the same issue as me?

By the way I've already checked all hoses and fittings....no leaks.

Mine does the same thing. No worries.

[CarzCarzCarz]

Originally Posted by Fizz

Anyone here using the Delicious 8.65 version tune, and have throttle hesitation issues at low revs? In my case when moving off quickly from a standstill...as soon as I release clutch pedal and get on the throttle, it surges forwards as you'd expect, but then momentarily jerks/bogs down a little (around the 2200-2400rpm area) before picking up revs again. The only way to take off smoothly without the car jerking is to carefully let off the clutch doing it slower than I would normally do previously.

Same thing also happens during in-gear rolling acceleration if I get on the throttle too quickly at low revs.

Contacted Bill and he said he's working on a 8.75 update which should sort this out....but I'm just wondering if anyone else is experiencing the same issue as me?

By the way I've already checked all hoses and fittings....no leaks.

YUP, I've got a similar issue. Rev up, start letting out the clutch and then the engine stumbles for a sec (even if I give it more gas), then it catches up and runs fine the rest of the way. Always does this from a stop for me, even when warmed up and on all maps.

Quite annoying as it feels the cars about to die when your trying to hurry and get out in front of traffic.

[8686]

@DeliciousTuning

Dear Bill,

When you expect the 8.75 version to be released.

Thank you

[Fizz]

Originally Posted by 8686

@DeliciousTuning

Dear Bill,

When you expect the 8.75 version to be released.

Thank you

I was told in about 1 month...

[8686]

Originally Posted by Fizz

I was told in about 1 month...

Outch. I was going to order the stage2 tune.
Now I have to wait for another month.

[Vten]

Originally Posted by Fizz

I was told in about 1 month...

Sounds good , at least I have a month to gather the extra $$ for the intercooler upgrade, flex fuel kit and tunes.

[Canivideo]

I've been searching all morning but haven't been able to find the information:

Can anyone provide the hex bolt size for the 6 bolts that attach the rear intake chamber? See image below.

TIA.

[brianhj]

5mm

[Canivideo]

Originally Posted by brianhj

5mm

So M5 20?

Thank you.

[SLC_BRZ]

So I'm looking into the stage 1 kit right now and wondering if these come with a base map tune or if it's just the tuner kit and it's up to you to to buy the EcuTek license and cable and source your own tuner out?

[brianhj]

Originally Posted by Canivideo

So M5 20?

Thank you.

20 is length? Not sure, just know my 5mm hex wrench fits in them

[mikalem]

Originally Posted by brianhj

20 is length? Not sure, just know my 5mm hex wrench fits in them

If I remember its 20 - replaced them earlier last year.

[DeliciousTuning]

Originally Posted by moto-mike

Yes and no. Assuming MBT for both, 19 psi will make more power than 15 psi even if you take 5 degrees of timing out. More air = more power, and MBT will change with load. IF 19 psi makes so much heat that you pull out excessive timing, then you will make less power. But this will be in the region of 0-5, maybe even negative advance. And I wouldn't expect to see that until you overspin the blower by using a 70mm pulley. We see this on the 210 especially.

If you are running 12 degrees of ignition advance or more, you are not that close to the knock threshold. The closer to 0, the closer to "boom." You have to remember that valve timing, air fuel ratio, and other factors determine final ignition timing. So tuner A may end up running a 5 degree difference in timing over tuner B based on what those other parameters are.

So to sum up my findings in the other thread, 19 psi leaves us running a high enough timing number without imminent disaster that I think the setup can work fine for some folks. With a bigger pulley, it will work really good on pump.

What you describe otherwise is very accurate...for standard port injection motors with perhaps less efficient head designs. What we see with direct injection turns a lot of that stuff on its head. 5 years ago if someone told me you can run 12.5 CR at 9 psi or more on pump gas reliably I would have laughed. Today that's the default for most kits, and we're running 19 psi and still wondering where that ceiling is. What I'm starting to think here is that with this combo and the right tuning, the only limitations will be drivetrain, quality of the motor from subaru, and overall tensile strength of the rods and how much force the ring lands will take. Bearings are a concern as well since the harder you hammer them the greater the chance it will spin. But that you can see on both pump gas and e85, and there are several cars pushing 300 torque or more on stock motors. Some pop, some haven't (yet). I think this party is just getting started.

Got a couple interested customers in the 335 kit. So it will be good to see what you determine. I think we might try running a controller to drive the bypass valve a bit, to bleed off air, but all in due time.

Cheers,
William Knose
Delicious Tuning