Is worth the $ to go from a gen 2 whipple to a gen 4.

[Sean709]

My car now has a gen 2 stage 2. ARH complete catted system and a jms bap. the dyno sheet came with the car from original owner from revolution performance in MD. shows 709/523 @ 13.6 max on boost on 93 oct with the whipple tune. I am running boostane now at around a 100 oct mix and deciding if its worth the 4k to buy a gen 4 head unit. I do not have E 85 in my state of CT. My main concern is with the bit more boost of the gen 4 will it be on the edge to run the 3.625 pulley and boostane. I guess it would have around 14.5 lbs boost. I would love the get rid of the cats but CT is a strict blue state. I am waiting for a spot to get a custom tune from wicked motorsports in NJ. If I had to go up in pulley size I doubt it would really be worth spending that much money on it. The car just has only 12000 miles btw. So just do the tune or gen 4 then tune I guess is my question.

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[FreePenguin]

If you are happy with what you have, I wouldn’t upgrade. Do you feel dis satisfied with the current power?

 

[Sean709]

If you are happy with what you have, I wouldn’t upgrade. Do you feel dis satisfied with the current power?

I have had stuff with up to 1600hp so it seems to pull pretty good for what it is but is not eye opening to me. I dont race it but I just have this to have something to spend time on basically a project Sunday car so im always deciding what to do next on it.

 

[FreePenguin]

I have had stuff with up to 1600hp so it seems to pull pretty good for what it is but is not eye opening to me. I dont race it but I just have this to have something to spend time on basically a project Sunday car so im always deciding what to do next on it.

Sounds like you also want something new to do and project. I’m same way, sometimes I spend more money on stuff I don’t need but it’s fun to do.

following to see what outcome will be. And how much of a difference if you did it if you think it’s worth it in the end.

 

[Sean709]

Sounds like you also want something new to do and project. I’m same way, sometimes I spend more money on stuff I don’t need but it’s fun to do.

following to see what outcome will be. And how much of a difference if you did it if you think it’s worth it in the end.

Yes exactly. I own a landscaping company and this time of year I have alot of free time on my hands. I did search many older threads. One thread a guy did this swap of head units only. If I remember correctly he gained 60hp which seems like alot but he was on E85. Whipple claims 30 to 150 gain and state something like at least 30 hp on a typical pump gas setup with just the swap and no new tune needed. I would figure about 30hp I would hope.

 

[wazslow]

Without access to E85, I don't see the point. Even with 93/boostane, I wouldn't feel safe going over 750hp, but thats just me.

 

[Sean709]

Have you gone "full send" with the gen2 yet? Smallest possible pully, supporting mods, e85/racegas tune?

No I dont have e85 in my state and the closest place with race fuel is about a half hour away. I really just want to stick 93 and boostane which a 3.625 pulley seems to be pretty close to how small a pulley you can run and still stay pretty safe. It does have supporting mods for a stage 2 inc the 72lb injectors and 132 tb and a bap. Also it has the op and tc gears long tubes. Twin disk cf drive shaft. Half shafts etc.

 

[SolarFlare]

Blower upgrades typically work best when your current setup is pushed. Where you can take advantage of newly developed efficiencies. Can you gain 10-20whp? Sure maybe? But how much of that is weather differences, margin of error on dyno, a sweeter blend of 93? Would it justify the 4 grand?

 

[Sean709]

Blower upgrades typically work best when your current setup is pushed. Where you can take advantage of newly developed efficiencies. Can you gain 10-20whp? Sure maybe? But how much of that is weather differences, margin of error on dyno, a sweeter blend of 93? Would it justify the 4 grand?

I think you all are gonna save me some money. I really wish we had E85 as I would put in a full fuel system, injectors, smaller pulley and tune but I guess it will just be a custom tune.

 

[Jackson1320]

I think you all are gonna save me some money. I really wish we had E85 as I would put in a full fuel system, injectors, smaller pulley and tune but I guess it will just be a custom tune.

I live where e85 is not a option right now. So water/meth is my go to option

 

[WildHorse]

709/523 @ 13.6 max on boost on 93 oct with the whipple tune.

Well with boostane you could add a couple more degrees of timing and probably pick up another 40 hp. The way I go is keep what you have, but get a tune specifically for race gas with a similar stoich to the 93 pump. 14.1 range if it's E10. And with a 100 octane race fuel you could most likely better that 40hp bump vs boostane. This way you can have the street tune & a few more degrees of timing race tune on race gas.

 

[engineermike]

If you are knock-limited, something like an interchiller or killer chiller would probably be money better spent. That will buy you approximately 2 deg timing or 2 psi boost capability (but not both).

 

[Sean709]

I live where e85 is not a option right now. So water/meth is my go to option

TY. I did think about doing that. I will run it by the tuner this week and see if he would want to tune it with a meth kit.

 

[Sean709]

Well with boostane you could add a couple more degrees of timing and probably pick up another 40 hp. The way I go is keep what you have, but get a tune specifically for race gas with a similar stoich to the 93 pump. 14.1 range if it's E10. And with a 100 octane race fuel you could most likely better that 40hp bump vs boostane. This way you can have the street tune & a few more degrees of timing race tune on race gas.

Do you mean so the timing will self adjust with the race fuel. Does anyone know how much timing the whipple tune allows timing to advance with better fuel and if it is possible for the tuner to increase that limit. Ilike that idea.

 

[WildHorse]

Do you mean so the timing will self adjust with the race fuel

Yeah. Tune sets the initial timing, then let the knock sensors add timing.

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