[LT1ornothing]

Originally Posted by KingLT1

I don't see why you need anything more then a LT4 tank pump(your car might already have) and a JMS booster for 600whp? I was running full E @ 7-8psi and had no issues with the low side. My car made 596whp on drag radials in 5th gear on that setup.

King, did you also have the LT4 high side and LT4 injectors at the time?

[laynlo15]

Originally Posted by KingLT1

I don't see why you need anything more then a LT4 tank pump(your car might already have) and a JMS booster for 600whp? I was running full E @ 7-8psi and had no issues with the low side. My car made 596whp on drag radials in 5th gear on that setup.

I'd say your right and yes my car is supposed to have the Lt4 pump. Mike and talked about running a boost a pump to raise the voltage and we may end up doing that, running less boost and little more timing. I'll be doing an ATI balancer so I can run his lower pulley. We may at some point make more then 600 but that's my goal this year to keep it safe. I appreciate you input, so thanks a lot. What voltage are you running to keep your low side consistent? Maybe 18 volts?

[KingLT1]

Originally Posted by 1LEornothing

King, did you also have the LT4 high side and LT4 injectors at the time?

LT4 injectors and LPE big bore.

Originally Posted by laynlo15

I'd say your right and yes my car is supposed to have the Lt4 pump. Mike and talked about running a boost a pump to raise the voltage and we may end up doing that, running less boost and little more timing. I'll be doing an ATI balancer so I can run his lower pulley. We may at some point make more then 600 but that's my goal this year to keep it safe. I appreciate you input, so thanks a lot. What voltage are you running to keep your low side consistent? Maybe 18 volts?

About 16.5-17 volts. Don't go over 17.3 or it causes the control module to freak out...at least on the earlier years.

[laynlo15]

Originally Posted by KingLT1

LT4 injectors and LPE big bore.






About 16.5-17 volts. Don't go over 17.3 or it causes the control module to freak out...at least on the earlier years.

Thanks for the heads up, appreciate it.

[L78toLT1]

Whew!! Just killed nearly a full pot of coffee, working my way thru this thread! I've been busy lately, and somehow missed the big news! So you're going back to a blower, and a 2300 at that! Can't wait to see where you end up. I'm thinking around 700 whp. Good luck getting everything installed and sorted in time for lsfest.. wish I was a little closer geographically, I'd come over and give you a hand.

[laynlo15]

Originally Posted by L78toLT1

Whew!! Just killed nearly a full pot of coffee, working my way thru this thread! I've been busy lately, and somehow missed the big news! So you're going back to a blower, and a 2300 at that! Can't wait to see where you end up. I'm thinking around 700 whp. Good luck getting everything installed and sorted in time for lsfest.. wish I was a little closer geographically, I'd come over and give you a hand.

It all depends on when SCOL ship, supposedly 10 to 14 days. Mike (toohighpsi) is getting all the other parts together but the controller won't be ready till after the 12th of August. If I have everything by the 15th or so I'll go ahead with the install and hopefully I don't run into any missing parts issues. If I don't get everything by then I'm going just run NA as originally planned. What did you find out on your dead cylinder?

[L78toLT1]

Originally Posted by laynlo15

It all depends on when SCOL ship, supposedly 10 to 14 days. Mike (toohighpsi) is getting all the other parts together but the controller won't be ready till after the 12th of August. If I have everything by the 15th or so I'll go ahead with the install and hopefully I don't run into any missing parts issues. If I don't get everything by then I'm going just run NA as originally planned. What did you find out on your dead cylinder?

If push comes to shove timing wise, you could always run at 5 - 6psi without the port injection plates at the fest. My car made 560whp with just the blower, cai and headers.
Dead cylinder is still a mystery. If I bolt coil 7 down to the valve cover it misses. Leave it dangling, no miss. I swapped #1 &#7 coil and it's a good. Think I'll replace that coil to be on the safe side

[laynlo15]

Originally Posted by L78toLT1

If push comes to shove timing wise, you could always run at 5 - 6psi without the port injection plates at the fest. My car made 560whp with just the blower, cai and headers.
Dead cylinder is still a mystery. If I bolt coil 7 down to the valve cover it misses. Leave it dangling, no miss. I swapped #1  coil and it's a good. Think I'll replace that coil to be on the safe side

Ground wire

[EDFHOBBIES]

Originally Posted by asthmamax11

Once the port injection gets remotely reasonably priced (which I think this upcoming recession will bring vendors to theirs knees begging for customers) then that is 100% best way to go.
The fueling on these is a bit complicated...

You just need the Spacers with port, Injectors, Wideband, and a controller. If you have a good tuner he will most likely build a harness. 80% of the holley or other brand harness inputs are not even needed and usually ends up a big mess when installed by poor shops. I didn't count an aux pump price since you most likely need that to use lt4 DI stuff they are around the same price.

look up the Haltech stuff

Haltech WB1 or WB2 is less than 450
Haltech elite 950 is 1120.00
Injectors are 400 to 1100

That's pretty cheap for fuel to 1400 plus

[laynlo15]

Thought I'd give everyone an update, still waiting on SCOL to ship. They were hoping for this week, but I haven't talked to them since last week so hope that's still what their plan is. Mike (toohighpsi) is almost finished with the controller and should be shipping it after the 12th, but all the other parts should be here next week. Needs to happen pretty soon for me to get ready for the LS Fest. Going to be tight for sure.

[Chrome383Z]

Originally Posted by KingLT1

I don't see why you need anything more then a LT4 tank pump(your car might already have) and a JMS booster for 600whp? I was running full E @ 7-8psi and had no issues with the low side. My car made 596whp on drag radials in 5th gear on that setup.

Another data point I just finished remote tuning mine with Ted.

2650 110mm upper, 8.86” (10%) lower. 9-10 psi at 85F.
LPE HPFP
XDI+30
LT4 w JMS@17.25V

Ended up settling at E70. Ran full E (79%) and injector PW was right at 6.0ms. Ted wanted me to back it down a bit to allow room for COT enable which was off during tuning. High side was holding up to 6700 when I backed out (LT1 pressures). Low side isn’t registering (2019 pid issue I haven’t resolved). E67 was like 5.25ms @ 85F.

I don’t drive the car under 60 deg, but when it cools off to the mid 60s I’ll likely log again to make sure it’s holding well. I could see dropping to E65 in the fall.

Won’t have a chance to put on the dyno for a couple weeks. Tuned at .82 lambda.

[laynlo15]

Originally Posted by Chrome383Z

Another data point I just finished remote tuning mine with Ted.

2650 110mm upper, 8.86” (10%) lower. 9-10 psi at 85F.
LPE HPFP
XDI+30
LT4 w JMS@17.25V

Ended up settling at E70. Ran full E (79%) and injector PW was right at 6.0ms. Ted wanted me to back it down a bit to allow room for COT enable which was off during tuning. High side was holding up to 6700 when I backed out (LT1 pressures). Low side isn’t registering (2019 pid issue I haven’t resolved). E67 was like 5.25ms @ 85F.

I don’t drive the car under 60 deg, but when it cools off to the mid 60s I’ll likely log again to make sure it’s holding well. I could see dropping to E65 in the fall.

Won’t have a chance to put on the dyno for a couple weeks. Tuned at .82 lambda.

Even at that boost you should make decent hp over 600. That's a big upper for sure but with the 10% lower its not an issue to make good boost for the street.

[KingLT1]

Originally Posted by Chrome383Z

Another data point I just finished remote tuning mine with Ted.

2650 110mm upper, 8.86” (10%) lower. 9-10 psi at 85F.
LPE HPFP
XDI+30
LT4 w JMS@17.25V

Ended up settling at E70. Ran full E (79%) and injector PW was right at 6.0ms. Ted wanted me to back it down a bit to allow room for COT enable which was off during tuning. High side was holding up to 6700 when I backed out (LT1 pressures). Low side isn’t registering (2019 pid issue I haven’t resolved). E67 was like 5.25ms @ 85F.

I don’t drive the car under 60 deg, but when it cools off to the mid 60s I’ll likely log again to make sure it’s holding well. I could see dropping to E65 in the fall.

Won’t have a chance to put on the dyno for a couple weeks. Tuned at .82 lambda.

Sounds about right. how much boost does it make on the hit?

[Evansa22]

Originally Posted by Chrome383Z

Another data point I just finished remote tuning mine with Ted.

2650 110mm upper, 8.86” (10%) lower. 9-10 psi at 85F.
LPE HPFP
XDI+30
LT4 w JMS@17.25V

Ended up settling at E70. Ran full E (79%) and injector PW was right at 6.0ms. Ted wanted me to back it down a bit to allow room for COT enable which was off during tuning. High side was holding up to 6700 when I backed out (LT1 pressures). Low side isn’t registering (2019 pid issue I haven’t resolved). E67 was like 5.25ms @ 85F.

I don’t drive the car under 60 deg, but when it cools off to the mid 60s I’ll likely log again to make sure it’s holding well. I could see dropping to E65 in the fall.

Won’t have a chance to put on the dyno for a couple weeks. Tuned at .82 lambda.

Going from 85*F to 60*F, wouldn't be surprised if you had to drop ethanol 10 points. That was my experience going from 80's to 55-60*F. That was only a jms booster for fueling on 13 psi lt4.