[Akura]

Hello,

I post this here hoping to have better luck with answers than I had with the ZL1 forum (0 replies)...

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Finishing my build and I am thinking about doing the supercharger porting.

After reading tens of threads from this forum, the v8 LT1 & bolt-ons and the Forced Induction one, I have some questions about this upgrade and the mods added.

First of all, the car will be street used with 3 or 4 small road courses per year, so these are the mods done now...

"Stage 1":

Spark plugs ltr71x-11
AEM Wideband

Headers 1"7/8 Stainless Power with ceramic coating
Longtube catless 3" with handmade X-pipe
2x vibrant 1795 18" resonators
Stock muffler

ATI Balancer 918856
ATI overdrive 916227 9,17" (+15%)
Belt K08045HD

ADM intercooler reservoir V2

CAI Rotofab BigGulp
TB 95mm LT5 (sold when the new one arrives)

Elite E2-X catch can

Upgraded oil pump and tensioner chain.

Coming just now from your country and as a "stage 2":

C&R oil radiator #325-CR-UC-SQC014B

Oil Filter Sandwich Plate with 212ºF Thermostat -10AN

FI Interchiller with LT4/LT5 Blower Spacer Plates + thermal blanket + PCV valve

CWA400 Intercooler Pump -16AN converted

Banks iDash SuperGauge

1LE steering air vents.

My tuner is from EU, but this time I will hire remote tuning from EEUU. Having doubts about the tuner (Pray, Jannetty or Elite), but this is another story.

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Knowing that here in Spain we don't have E85, just only equal to your 93 pump gas and for reasons that are now irrelevant I don't want to modify the fuel system of the car, leaving it stock and reach the maximum power that I can without modifying it, next upgrade is the supercharger porting with the 103 NW TB.

About the porting, here are my questions:

- With stock fuel and only down pulley, will you do the "Stage X" upgrade? Greg recommends it, but it's his business...

- Will you add the rebuild option? 650$ seems a lot assuming Synergy explains it's about 100$ the real cost (https://synergymotorsports.com/blogs...veryone-misses).

- If not, it's possible to do it yourself when you receive the supercharger? Will you do it?

- Doing the port and bearing the handicap of the stock fuel system, will you stay with the 15% pulley or do you recommend a "downgrade" to 10%?

- Will you tune the TCM even if I don't expect to reach more than 680whp aprox?

Thank you for reading this and thank you again if you take your time to give me your advice or a new recommendation

[Katech_Mike]

You will likely be hard up against the limits of the HPFP with the X-port and current 15% lower.

[JSH]

Originally Posted by Akura

- Will you tune the TCM even if I don't expect to reach more than 680whp aprox?

Follow KaTech's advice. FWIW, in terms of a reference for the OEM FP, mine makes around 850 actual wheel with a 10% lower, 3000 rail psi, and DSX low side, 80 psi.

[Akura]

Originally Posted by Katech_Mike

You will likely be hard up against the limits of the HPFP with the X-port and current 15% lower.

Originally Posted by JSH

Follow KaTech's advice. FWIW, in terms of a reference for the OEM FP, mine makes around 850 actual wheel with a 10% lower, 3000 rail psi, and DSX low side, 80 psi.

Thank you both, appreciate your answers!

So now I have these options:

1) standard port retaining 15% pulley (don't know why, but it's the one my mind is telling me to reject directly)

2) standard port downgrading to a 10% pulley

2) x-port with a 10% pulley or even 5%...

Which one do you recommend for 93 oct and stock fuel system?

@Katech_Mike as I asked a year ago to your shop by mail and they told me they don't do remote tuning. Right now is the same answer?

Thank you again.

[KingLT1]

Do the X port...especially for 93 octane. You will pick up 3-4 psi on stock pulleys and it won't run any hotter.

[JSH]

Originally Posted by Akura

@Katech_Mike as I asked a year ago to your shop by mail and they told me they don't do remote tuning. Right now is the same answer?

I'm sure Katech has good reasons to not do remote tuning, but my ZL1 is remote tuned by KingLT1. My 2013 and 2016 GTRs were also remote tuned. There's a bunch of remote tuning going on nationwide.

[Joshinator99]

Originally Posted by JSH

I'm sure Katech has good reasons to not do remote tuning, but my ZL1 is remote tuned by KingLT1. My 2013 and 2016 GTR were also remote tuned. There's a bunch of remote tuning going on nationwide.

I think remote tuning can definitely work, it’s just nice to be on the dyno to develop the base tune (90-95% completion) then use remote tuning to finish it off. It’s tough to tune cars at the 800+ WHP level on the street, that’s for damn sure!

[JSH]

Originally Posted by Joshinator99

I think remote tuning can definitely work, it’s just nice to be on the dyno to develop the base tune (90-95% completion) then use remote tuning to finish it off. It’s tough to tune cars at the 800+ WHP level on the street, that’s for damn sure!

Of course tuning at the track is best. We're waiting on the snow to melt so I can get the car to the dyno.

[Katech_Mike]

Originally Posted by Akura

@Katech_Mike as I asked a year ago to your shop by mail and they told me they don't do remote tuning. Right now is the same answer?

We do not offer any stand alone remote tuning services. We offer remote tuning support if we built the vehicle here at our facility.