Power increase for Spec C, will it be worth it?
07 September 2008, 01:53 PM
#1
Power increase for Spec C, will it be worth it?
I know its a bit of a subjective question, "will it be worth it", but its something I just cant figure out!
Iv got a Hawkeye Spec C with a Litchfield/Powerstation generic map at approx 330bhp (estimate as generic map, will be going on rollers next month). Only extra engine mods are TMIC - Hyperflow & Blitz Nur spec backbox. Im guessing 0 to 60 will be approx 4.1sec on paper, not sure what torque is till it goes on rolling road.
Its seems 390 bhp is really the safe maximum on a JDM spec c engine, leaving a bit of a saftey margin. Anything at the 400bhp or more requires at leat £4k work of new turbo & injectors etc, a route I dont want to go down.
So the only option really is what Webmaster & others have done which is:
Air filter element
Full Miltek 3" exhaust (either dects or hi flo cats)
3 port boost solenoid
Uprated Actuator
Remap
Approx cost £1.4k max
This should get approx between 370 to 380 bhp with a good torque figure too.
How will the difference from e.g. 325bhp to 375bhp affect the car & how will this increase feel driving on road & track. Is an increase of approx 45bhp on a 1370kg car a big increase? Will I be able to immediately tell the difference or will it be very un noticeable? Is it cost effective?
All opinions appreciated.
Iv got a Hawkeye Spec C with a Litchfield/Powerstation generic map at approx 330bhp (estimate as generic map, will be going on rollers next month). Only extra engine mods are TMIC - Hyperflow & Blitz Nur spec backbox. Im guessing 0 to 60 will be approx 4.1sec on paper, not sure what torque is till it goes on rolling road.
Its seems 390 bhp is really the safe maximum on a JDM spec c engine, leaving a bit of a saftey margin. Anything at the 400bhp or more requires at leat £4k work of new turbo & injectors etc, a route I dont want to go down.
So the only option really is what Webmaster & others have done which is:
Air filter element
Full Miltek 3" exhaust (either dects or hi flo cats)
3 port boost solenoid
Uprated Actuator
Remap
Approx cost £1.4k max
This should get approx between 370 to 380 bhp with a good torque figure too.
How will the difference from e.g. 325bhp to 375bhp affect the car & how will this increase feel driving on road & track. Is an increase of approx 45bhp on a 1370kg car a big increase? Will I be able to immediately tell the difference or will it be very un noticeable? Is it cost effective?
All opinions appreciated.
Last edited by rickya; 07 September 2008 at 05:39 PM.
07 September 2008, 02:55 PM
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07 September 2008, 03:31 PM
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How will the difference from e.g. 325bhp 375bhp affect the car & how will this increase feel driving on raod & track. Is an increase of approx 45bhp on a 1270kg car a big increase? Will I be able to immediately tell the difference or will it be very un noticeable? Is it cost effective?
All opinions appreciated.
Yes, you will be able to notice the difference, especially in the last few thousand rpm.
Go for it, you certainly won't regret it.
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07 September 2008, 05:49 PM
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If it's any help, we popped a Spec C on yesterday during mapping with a full
3" decat, RC air filter and Ecutek remap and came up with 361 bhp and 355 ft lb on our DD dyno. When we've had comparisons, our dyno usually gives slightly lower figures than other types. Whatever, it went very well indeed and sounded fantastic at peak revs!
3" decat, RC air filter and Ecutek remap and came up with 361 bhp and 355 ft lb on our DD dyno. When we've had comparisons, our dyno usually gives slightly lower figures than other types. Whatever, it went very well indeed and sounded fantastic at peak revs!
07 September 2008, 05:58 PM
#12
The biggest cost involved will be the full twin scroll exhaust system. The options in my price range will only be Miltek or Scoobyparts IIRC (not sure if H&S do one) & whether to go decat or high flow? This will set me back from £650 to £1000.
I think the other bits such as boost solenoid & actuator are only £100 to £200 & I already have licence fee paid for Ecutek.
I think the other bits such as boost solenoid & actuator are only £100 to £200 & I already have licence fee paid for Ecutek.
07 September 2008, 05:58 PM
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07 September 2008, 06:10 PM
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Ricky wait till u run ur car at surrey rolling road, once u get all the printouts of AFR's, boost, torque and power then present the data to the mapper, it will assist the mapper in many ways ! The most local respected ecutek mapper is simon aka jolly green monster ask him what he recommends
Better put my name down for Surrey Rolling road on Slowboy!
07 September 2008, 06:58 PM
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It's not just 325 to 375 bhp though is it as you'll feel the difference all through the rev range 
Mine was 294bhp on the rollers before mods & Bob Rawle estimated it to be 375bhp after mods & his remap. Massive difference & has me grinning (sp?) from ear to ear every time I start her up let alone get some spirited driving in
TX.
Mine was 294bhp on the rollers before mods & Bob Rawle estimated it to be 375bhp after mods & his remap. Massive difference & has me grinning (sp?) from ear to ear every time I start her up let alone get some spirited driving in TX.
07 September 2008, 11:31 PM
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Go for it Rickya the cars love to be revved with a full decatt the sound is addictive you know the spec of mine and to be honest when I changed it yes I felt the differance but you get used to it (me thinks its time for a change and up the anti a bit more on mine now).
08 September 2008, 02:51 PM
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The most, IMHO, you will get without Octane booster or Meth is around 360/360. The VF 36/37 seem to run out of puff by then, I'm around 350/360 without NF and 370/390 with. I can definately feel the difference between the two maps. All in I've spent around £2K on mods. That 12.5s 1/4 was with 350/360 btw, I'd rather use that as a yard stick!
Last edited by bluenose172; 08 September 2008 at 02:54 PM.
09 September 2008, 12:03 AM
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I havent forgotten Rickya mine is a full decat miltek from turbo to back,I also have a miltek centre section which has a sport cat in for mot time which I woulnt need to bother with until 09 and then its just a case of 4 bolts and undoing the lambda sensor and replace with the catted centre section.The spec on the car is the powerstation 400+ kit /hybrid twinscroll/bigger injectors etc.
Rickya mine is a full decat miltek from turbo to back,I also have a miltek centre section which has a sport cat in for mot time which I woulnt need to bother with until 09 and then its just a case of 4 bolts and undoing the lambda sensor and replace with the catted centre section.The spec on the car is the powerstation 400+ kit /hybrid twinscroll/bigger injectors etc.
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