Greddy Twin-Turbo In Development

WShade · 05-10-2010, 02:44 PM

Wow! White hot! Keep us updated.

jayfightmoves · 05-12-2010, 07:46 AM

We have the car back from Forged. Sharif tuned it to just over 440whp at around 8 PSI (waste gate pressure) on 100 octane . The 20gs would have easily put down over 500, but we only wanted to add 150whp max to the chassis. The car is going to be pounded on WOT most of its life. Rather than the occasional hard pull on the street. I'm certain Sharif has a very conservative map on the car, He has detailed the tune in another thread.. It was however very apparent of the HP potential of this kit.

I was able to drive the car some in my neighborhood. My first impressions "HOLY $#!+ BALLS" !!!! This car is so light, with the JRZs still set for NA and the new solid bushings... the 305 R888s where no match. Boost comes very quick, the waste gates open almost immediately... then things get interesting! With the open dumps and no sound deadening you can't here the race rubber screaming for mercy as the first 3 gear click away as fast as you can shift them. I made a few hard pulls and put the car away, as it is VERY loud. I will have a lot more details after some hard track testing this weekend.

Here are a few pics also new splitter and 335s (Camera Phone)

Sharif@Forged · 05-12-2010, 10:41 AM

Quote:

Originally Posted by jayfightmoves

We have the car back from Forged. Sharif tuned it to just over 440whp at around 8 PSI (waste gate pressure) on 100 octane . The 20gs would have easily put down over 500, but we only wanted to add 150whp max to the chassis. The car is going to be pounded on WOT most of its life. Rather than the occasional hard pull on the street. I'm certain Sharif has a very conservative map on the car, He has detailed the tune in another thread.. It was however very apparent of the HP potential of this kit.

I was able to drive the car some in my neighborhood. My first impressions "HOLY $#!+ BALLS" !!!! This car is so light, with the JRZs still set for NA and the new solid bushings... the 305 R888s where no match. Boost comes very quick, the waste gates open almost immediately... then things get interesting! With the open dumps and no sound deadening you can't here the race rubber screaming for mercy as the first 3 gear click away as fast as you can shift them. I made a few hard pulls and put the car away, as it is VERY loud. I will have a lot more details after some hard track testing this weekend.

Here are a few pics also new splitter and 335s (Camera Phone)

ROFL! You drove it on the street....I'd love to see your neighbor's expressions on their face. Nice!

G37Sam · 05-12-2010, 12:17 PM

Quote:

Originally Posted by jayfightmoves

We have the car back from Forged. Sharif tuned it to just over 440whp at around 8 PSI (waste gate pressure) on 100 octane . The 20gs would have easily put down over 500, but we only wanted to add 150whp max to the chassis. The car is going to be pounded on WOT most of its life. Rather than the occasional hard pull on the street. I'm certain Sharif has a very conservative map on the car, He has detailed the tune in another thread.. It was however very apparent of the HP potential of this kit.

I was able to drive the car some in my neighborhood. My first impressions "HOLY $#!+ BALLS" !!!! This car is so light, with the JRZs still set for NA and the new solid bushings... the 305 R888s where no match. Boost comes very quick, the waste gates open almost immediately... then things get interesting! With the open dumps and no sound deadening you can't here the race rubber screaming for mercy as the first 3 gear click away as fast as you can shift them. I made a few hard pulls and put the car away, as it is VERY loud. I will have a lot more details after some hard track testing this weekend.

Here are a few pics also new splitter and 335s (Camera Phone)

Get us some videos man!!

FuszNissan · 05-12-2010, 04:12 PM

Quote:

Originally Posted by Sharif@Forged

ROFL! You drove it on the street....I'd love to see your neighbor's expressions on their face. Nice!

That's what my reaction was. I couldn't imagine gutting my car and driving it on the street. That has to be nutz!

jayfightmoves · 05-13-2010, 07:25 AM

Quote:

Originally Posted by Sharif@Forged

ROFL! You drove it on the street....I'd love to see your neighbor's expressions on their face. Nice!

Fortunately most of my neighbors are gear heads too.

jayfightmoves · 05-15-2010, 09:13 AM

Quick update. I'm back from CMP. The car ran perfect. The Greddy twin turbos had zero issues on track, and the tune was solid. With that said we are still struggling with cooling issues. The ambient temps were in the 90s and I was seeing 280 oil temps within 4-6 hard laps. The turbos are adding some heating, but we were having this issue at stock power levels as well. Anyone that is truly pushing the 370 to the limit is painfully aware that this is a Nissan issue not a GReddy issue. I have another round of cooling upgrades in the works. I'll release the details when we get it all together and do some testing.

"How did it feel on track?"

The car is very strong. With a little mid throttle modulation, you can easily manage the spool up of the G20s in a midcorner situation. The extra power made the car a little loose on the 305s, but as soon as the 335s went on ,it was magic. The extra 150hp allowed me to steer the back of the car at will.... even with the huge rubber. Once you begin to unwind the wheel its a foot to the floor linear pull to redline. In the straights when shifting at or near redline, the spool up is almost immediate. I was running with a Porsche GT3 Cup all day. Their car was 2600# 400whp... and on Michelin slicks (we're on R888s). The car sounds amazing! Every time it comes of track a crowd of people gather and comment on the insane wail off the dumps.

Road Atlanta Monday..... I don't look to have truly impressive numbers until the cooling is sorted, and i can get in a rhythm. But, the potential is there. It's clear the power did not upset the car. And the bottom line..... It is a complete blast to drive! ..... more to come.

WShade · 05-15-2010, 10:15 AM

No vids?

jayfightmoves · 05-15-2010, 02:02 PM

Quote:

Originally Posted by WShade

No vids?

I have video... i dont know how much... left the cables at home in the rush to get out.

I was at the track with a prep'd subi... he got some from behind... way behind ( JK ) hes suposed to be getting it together

Sharif@Forged · 05-16-2010, 01:21 PM

Very good to hear!

. M. Seeya ok Monday at RA.

Even more extreme measures are in order to keep your car cool for track use. But I am sure it feels great to have some serious power behind the wheel.

Valentino · 05-16-2010, 01:56 PM

Great job

Yes, the 370Z have a major problem with Oil temp even N/A (on the track). keep us update with your solution. Whats your setup for Diff cooler? Pictures if you have any to show.

Thanks and Good luck.

jayfightmoves · 05-18-2010, 10:53 AM

working on the next round of cooling.... donations are welcome!

here's what we did as a quick fix for Road Atlanta. Saw "some" improved cooling... but may have been due to the higher sustained speeds, and more airflow.

bullitt5897 · 05-18-2010, 12:00 PM

Wow that looks good Jay! I am glad to see how far your car has come

FuszNissan · 05-18-2010, 02:15 PM

Damn that looks bad ass

RCZ · 05-18-2010, 03:55 PM

This is the best/biggest most awesome build on the board. Damn, I wish I had the funds to do something like this. Looking forward to see what you do with the cooling. That tiny cooler you have in there is not going to help you at all....specially not behind that huge intercooler.

05-10-2010, 02:44 PM	#241 (permalink)
WShade Track Member Join Date: Jan 2009 Location: San Antonio, TX Posts: 765 Drives: 09 370Z T/S/N Rep Power: 187	Wow! White hot! Keep us updated. __________________ Q50S Q60 RS400

05-15-2010, 10:15 AM	#248 (permalink)
WShade Track Member Join Date: Jan 2009 Location: San Antonio, TX Posts: 765 Drives: 09 370Z T/S/N Rep Power: 187	No vids? __________________ Q50S Q60 RS400

05-16-2010, 01:21 PM	#250 (permalink)
Sharif@Forged The370Z.com Sponsor Join Date: Dec 2008 Location: Marietta, GA Posts: 840 Drives: 2009 GT-R, 2010 370Z Rep Power: 17	Very good to hear! . M. Seeya ok Monday at RA. Even more extreme measures are in order to keep your car cool for track use. But I am sure it feels great to have some serious power behind the wheel. __________________ Sharif@Forgedperformance.com General Manager/Certified Tuner/NASA-PCA-BMWCAA Instructor JRZ RS1's Available NOW...PM me Cobb ProTuner, Uprev ECU Flash, FCON Vpro, Haltech, Motec Certified

05-16-2010, 01:56 PM	#251 (permalink)
Valentino Enthusiast Member Join Date: Jan 2009 Location: RaceTrack Posts: 349 Drives: SOLD 09,370z,M6 Rep Power: 305	Great job Yes, the 370Z have a major problem with Oil temp even N/A (on the track). keep us update with your solution. Whats your setup for Diff cooler? Pictures if you have any to show. Thanks and Good luck. __________________ Lou Fusz Nissan \| KW V3 \| SPL rear camber and toe bolt \| OS Giken LSD \| Nismo Diff cover \| Engine Oil cooler \| F.I. TDX Cat Back 18" Resonators \| F.I. Resonated Test Pipes \| Injen cold air intake \| COBB AccessPORT \| JWT Clutch Flywheel \|

05-18-2010, 12:00 PM	#253 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	Wow that looks good Jay! I am glad to see how far your car has come __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

05-15-2010, 09:13 AM	#247 (permalink)
jayfightmoves Base Member Join Date: Jul 2009 Location: ATL Posts: 70 Drives: 09 370,Z32TT, 2500hd Rep Power: 16	Quick update. I'm back from CMP. The car ran perfect. The Greddy twin turbos had zero issues on track, and the tune was solid. With that said we are still struggling with cooling issues. The ambient temps were in the 90s and I was seeing 280 oil temps within 4-6 hard laps. The turbos are adding some heating, but we were having this issue at stock power levels as well. Anyone that is truly pushing the 370 to the limit is painfully aware that this is a Nissan issue not a GReddy issue. I have another round of cooling upgrades in the works. I'll release the details when we get it all together and do some testing. "How did it feel on track?" The car is very strong. With a little mid throttle modulation, you can easily manage the spool up of the G20s in a midcorner situation. The extra power made the car a little loose on the 305s, but as soon as the 335s went on ,it was magic. The extra 150hp allowed me to steer the back of the car at will.... even with the huge rubber. Once you begin to unwind the wheel its a foot to the floor linear pull to redline. In the straights when shifting at or near redline, the spool up is almost immediate. I was running with a Porsche GT3 Cup all day. Their car was 2600# 400whp... and on Michelin slicks (we're on R888s). The car sounds amazing! Every time it comes of track a crowd of people gather and comment on the insane wail off the dumps. Road Atlanta Monday..... I don't look to have truly impressive numbers until the cooling is sorted, and i can get in a rhythm. But, the potential is there. It's clear the power did not upset the car. And the bottom line..... It is a complete blast to drive! ..... more to come.

05-18-2010, 02:15 PM	#254 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	Damn that looks bad ass __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

05-18-2010, 03:55 PM	#255 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	This is the best/biggest most awesome build on the board. Damn, I wish I had the funds to do something like this. Looking forward to see what you do with the cooling. That tiny cooler you have in there is not going to help you at all....specially not behind that huge intercooler.

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